Senku Ishigami/Synopsis

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Young Senku.

Senku was adopted by Byakuya Ishigami. One of his birth parents was allegedly Byakuya's best friend, but the circumstances that led to the adoption are unknown.

During Senku's childhood, he always had an interest in science ever since he dreamed about going into space in first grade. Ever since that moment, he had fallen in love with science and started fighting for his dream by reading many books and trying many different experiments and inventions. Overtime, with the help of his adoptive-father, Senku would gain the means he needed.

Senku would later befriend Taiju and Yuzuriha, where their friendship becomes unparalleled as they assisted with Senku's experiments.

Senku's experiments during his childhood.

Part of their experiments involved deploying light objects into orbit with a self-made rocket. The handicrafts club member, Yuzuriha, made knitted stuffed toys of herself, Senku, and Taiju. The rocket did not make it all the ways to outer space, but it shot the stuffed toys out into space.

To help Byakuya pass the swimming exam of the JAXA Astronaut Program, Senku built a special swimsuit.

At age ten, Senku and Taiju conducted more experiments but failed. Senku then realized he needed professional help, so he sent an email to NASA and told him of his exploits. A scientist called Dr. Xeno replied and tells Senku what he would need to conduct his experiment. Senku and Taiju are stunned by the price and Senku decides to get the money. Senku flew out to America and met with his father who is overjoyed to see him again but becomes disappointed when it turns out that Senku takes his credit card and flies back to Japan. Senku then buys his item and starts experimenting. Sometime later, an older Senku decided that he has a lot to learn.

To that end, Senku decides to travel to Africa to learn about ebola while Taiju is shocked by his action. During his time there, Senku ate lion meat. Senku later visited his father at NASA, where he admired a monument of a ship before being approached by Xeno who silently stood next to him, both obviously knowing each other. An excited Byakuya greets his son and ask why he seems spaced out, as Senku watches Xeno walking away and Senku tells his father nothing.

Prior to the petrification, Senku watched a televised report of Byakuya on his phone. He was amused when Byakuya told him on the live interview that he was going to bring him back space souvenirs. This would be the last time Senku ever saw his father.

Synopsis

Stone Formula Arc

Senku and Taiju shortly before the petrification event.

Senku first appears when Taiju declares that he is going to confess to Yuzuriha, Senku offers Taiju a "potion" he proclaims will give Taiju a ten billion percent chance of success. Taiju refuses it, saying he wants to confess and receive a genuine answer from Yuzuriha. Senku then reveals to the other classmate that the potion was actually made of gasoline and would kill Taiju if he drank it. However, he was ten billion percent sure that Taiju would have refused it. When his classmates begin making bets on how Yuzuriha will react to Taiju's confession, with all of them believing she will reject him, Senku bets ten thousand yen that Yuzuriha has feelings for Taiju as well. Afterwards, the Petrification takes place and Senku, along with everyone else, is turned to stone.

While petrified, Senku, who was still conscious, began to count the time of his petrification. Senku also planned to keep track of the season, so he could possibly revive before winter. At some point, his statue wound up in a cave, where the droplets freed him from his stone. Upon reviving, Senku has counted up to 117,354,893,870 seconds, meaning that he's been petrified for 3719 years and 249 days. Senku emerged on April 1, 5738, Stone Day. Senku marked the day on a tree outside the cave.

Senku sustains himself.

Freed from his petrification, Senku begins to plan and build towards sustaining himself. After creating clothing and a makeshift house, Senku realized that he would need help in his ventures. That's when he came upon a petrified Taiju and decided to find a way to depetrify people. He tries theorizing what caused the initial petrification, choosing between an alien invasion, a human mistake or a new strain of virus. He concludes that the petrification targets only swallows and humans and that there has to be some logic behind it, no matter how much it resembles fiction. He then goes on to discuss how the revival works - pondering over whether he revived by his body being shifted into a cellular form since the petrified statues are completely made of stone, and whether the degraded surface of his body has to repair itself. He comes to a realization that since only the surface part of the statues degrades, it's the only part that turns into a stone shell and doesn't turn to a cellular form. He goes back to the spot where he was depetrified and discovers that nitric acid was the cause of his depetrification. Thus, he begins to test his theory out by applying nitric acid on petrified birds and Taiju, but to no avail. Senku states that the brain uses 400 calories a day to stay alive, which means something in the stone must have fueled enough energy for him to think for over 3700 years. He surmises that adding alcohol, which comprises of ethanol, will turn nitric acid into nital and might help with the depetrification. However, he didn't have any alcohol and didn't have the means to obtain it, thus he came to a dead end. Knowing that Taiju might revive soon, he carved a message on the tree Yuzuriha was at and tells him to meet him. That's when Taiju depetrified on his own and met up with Senku.

Senku and Taiju experimenting on revival formula.

With Senku as the brain and Taiju as the brawn, they began to work together in order to survive and find a way to depetrify other people. That is when Taiju comes upon some wild grapes in the forest and suggests the idea of creating alcohol through the wild grapes. After creating alcohol using the wild grapes, Senku is ready to test out his theory on nitric acid and ethanol by testing it out on the petrified birds. To their surprise, nital is the Revival Fluid that can depetrify people. Thus, they finally came up with the formula of depetrification. And being the one who found the wild grapes, Taiju decides that the first person they should depetrify is Yuzuriha.

Vs. Tsukasa Arc

As they attempt to depetrify Yuzuriha, they are attacked by lions and are forced to free the petrified Tsukasa, the strongest primate high-schooler. Upon being freed, Tsukasa displays his unbelievable level of adaptation and strength when he quickly understands the situation and proceeds to kill the leader of the lions with a single punch.

Freed from danger and having run out of nital, they all return to their hideout with a petrified Yuzuriha.

Senku talking with Tsukasa.

While at their hideout, Senku begins to talk about his plans to revive humanity to the modern age through the four uses of calcium carbonate in seashells. But as Tsukasa begins to show displeasure about Senku's plan of reviving modern humanity, Senku decides to only reveal three of its uses, which are agriculture, architecture, and medicine. On their way to procure sea shells, Senku gradually begins to notice Tsukasa's desire to maintain the status quo as he destroys petrified statues of old people and suspects that Tsukasa will betray them.

Senku and Tsukasa's philosophies clash.

For precaution, Senku sends Tsukasa to procure more nitric acid as a ploy to buy them time on what to do. With Tsukasa leaving, Senku quickly tells Taiju to free Yuzuriha with the nital he procures. Afterwards, he explains to Taiju and the depetrified Yuzuriha that they only have two choices: either stand and fight Tsukasa or run. But before they can decide, they are stopped by Tsukasa, who intends to preserve a primitive world. Tsukasa believes that it would be better for humanity if the world remains primitive where nobody owns anything and everything is free for grabs. With his intentions clear, Tsukasa begins to attack Senku and the others in an attempt to force them to surrender. But with no idea what the formula for depetrification is, Tsukasa decides to retreat in order to give them time to surrender.

Senku plans on making guns in order to battle Tsukasa.

With the time given to them, Senku tells Taiju and Yuzuriha to escape while making it seem like they ran between their tails. In truth, Senku already has a plan of defeating Tsukasa as he revealed the fourth use of calcium carbonate, which is for warfare. In other words, gunpowder. They quickly make their way to Hakone to procure sulfur and add it to the charcoal and saltpeter that they have in order to create gunpowder. As they begin to test their powder, Tsukasa, who was not fooled by their ploy, realizes what they're doing and comes after them.

Gunpowder is made.

At the summit where they test the gunpowder, Senku, Taiju and Yuzuriha notice a smoke signal confirming the presence of other humans. They want to send a signal fire back, but are aware that it will give away their position to Tsukasa, Finally, after some deliberation, Senku tells them to light up smoke signals themselves to establish contact with the unknown human.

Upon seeing the signal, Tsukasa catches up with them and takes Yuzuriha hostage. He bargains with Senku for the depetrification formula in exchange for Yuzuriha. Senku agrees and gives him the ingredients for the formula. Tsukasa then once more asks Senku to stop trying to advance humanity and join him for he did not want to kill Senku.

Taiju holds the "dead" Senku.

Senku then declines, saying that that's the only thing he cannot do. Tsukasa understood, knowing he expected such and proclaims that had they met 3700 years ago, Senku might have been his first friend. With a heavy heart, Tsukasa breaks Senku's cervical plexus, which results in Senku dying.

As Taiju returns from lighting the smoke signals, he witnesses an unconscious Senku on the floor with Yuzuriha in tears. Realizing what has happened, Taiju charges towards Tsukasa as he throws a boulder into the air. This distraction allows Yuzuriha to throw gunpowder on Tsukasa, which explodes when the boulder hits the ground and allows Yuzuriha and Taiju to escape with Senku. Tsukasa decides not to go after them knowing full well that Senku could not make a recovery in the stone world.

The group splits to continue working on bringing down Tsukasa.

As Yuzuriha and Taiju stop to examine Senku, they notice that part of Senku's neck is still petrified, which might have protected him from Tsukasa's blow. They quickly apply the depetrification formula to Senku's neck, hoping that he'll wake up. After crying out to Senku many times, Senku manages to return to his senses. From there, Senku asks Yuzuriha and Taiju to return to Tsukasa's empire as spies so that Senku can keep tabs on him. Thus, they part ways as Senku ventures out by himself to build his Kingdom of Science to combat Tsukasa.

Kingdom of Science Arc

Senku and Kohaku riding towards the village.

On his travel, Senku meets Kohaku, the person who lit up the smoke signals. She is defeated by Tsukasa and is underneath a tree, which renders her unable to move. Senku helps her lift the tree with the use of pulleys, which she thanks him for. She even goes as far to declaring a liking for Senku. Disturbed to hear a stranger's love confession, Senku voices his uninterest in the manner before Kohaku c clarifies that she means it in a platonic manner. She soon applauds him for his gallantry for sacrificing his life to save Yuzuriha, which she had earlier seen. She then asks Senku to come with her to her village because she was astounded by his science which she refers to as "sorcery." After talking to Kohaku, Senku realizes that Kohaku and her village are descendants of humans who were able to avoid the petrification 3700 years ago and have survived since then, meaning that they grew up not knowing the modern world.

The battle of "sorcery".

Upon arriving at the village, Senku is attacked by Kinro and Ginro, who suspect him of being an exile. After astounding them with his soap bubbles "sorcery," Senku is confronted by Chrome, the self proclaimed "sorcerer" of the village. Chrome challenges Senku to a sorcery battle with the stake being all his life gatherings and himself versus Senku kneeling before him and promising to never step foot near the village again. Chrome, of course, is utterly defeated by Senku and has to surrender everything to Senku.

Telling Chrome Tsukasa will kill him.

After examining the things that Chrome has, Senku decides to make Kinro a golden spear by dipping the edge of his spear with melted mercury mixed with gold dust. Though it has little effect in winning Kinro over, Ginro, who wants a silver spear to match his name, is convinced. Senku then explains to Chrome that everything Chrome has done is not sorcery, but science and that Chrome is the first scientist to have been born in the past 3700 years. Testament towards Tsukasa that no matter how much Tsukasa tries to hinder humanity's advancement, there will always be someone out there to challenge it and push it forward.

Soon after settling down, Kohaku reveals to Senku that her sister, Ruri, is sick and that Chrome has been trying to find a cure for her. Wanting to get the village to trust him more, Senku proclaims that he has a cure-all medicine that might work on Ruri. The cure he's talking about is antibiotics. He explains to them that they can either go towards the sulfa drug route or the penicillin blue mold route to make antibiotics. They decide to take the sulfur route due to it being more abundant in this era.

As they try to gather the ingredients to make antibiotics, Chrome points out that the earth is spinning. To Senku's surprise, he notices that the north star has shifted due to earth tilting after 3700 years, which leads Chrome to show Senku his magnetic rocks that act as compasses to point towards north. Realizing that they possess magnets, Senku asks them to use the magnets to gather iron from the river. Thus the Iron age has dawned once more on Earth.

While gathering more iron at the river, they meet Suika, who was helping them secretly. She proclaims herself to be useless, but Senku deters her from thinking that way.

Senku and Chrome with Suika.

Senku tells Suika that her help is much appreciated and that everyone is welcome under his Kingdom of Science. Seeing Suika get swept away by Senku's words, Chrome references that Suika is Momotaro, a fictional children story of modern time. When asking why Chrome would know something that existed 3700 years ago, Chrome and Kohaku explain to Senku that it's a story that was told to them by Ruri, who is the priestess of the village. Senku then realizes that despite 3700 years passing, there are stories that are passed onto the next generations which piques his interest in Ruri. Upon hearing that Senku is interested in Ruri, Chrome blurts out his displeasure, revealing that he is in love with Ruri.

After gathering enough iron, the crew returns to the village outskirt so that Senku can prepare a furnace to melt the iron. In order to melt iron, they need to reach a temperature of 1500 degrees Celsius, which isn't possible by burning wood, which can only produce up to 700 degrees Celsius. Thus, they resort to adding more air to the fire in order to increase the temperature.

"Discovering" ramen.

But due to the lack of manpower, they are unsuccessful in melting the iron. Needing more manpower, Senku asks Suika to infiltrate the village and find out what the villagers wants in order to bribe them into helping.

After finding out that better tasting food can buy the help of the village, Senku asks the team to gather green foxtail to grind into flour and then make ramen. The plan is a success, which draws out many villagers to help Senku for ramen.

Senku and Chrome spark light for the first time.

But during their cooking section, they are intruded by Gen Asagiri, a modern-day mentalist who is currently working for Tsukasa. Tsukasa had sent Asagiri to make sure that Senku is truly dead, but with Senku now being able to produce iron, Asagiri is having second thoughts on supporting Tsukasa. He then asks Senku to give him a reason why he should support Senku's cause. Senku tells him that with the power of science, he will bring back electricity and the applications that go along with it. And with the metal melt with the effort of the village, Senku is able to build a mechanical electricity generator. Senku uses the manual-powered electricity generator to show the villagers light by conducting it through a roasted bamboo fiber.

Making of cola for Gen.

Just before Asagiri can make his decision, he is stabbed by Magma who mistakes Asagiri for Senku. The group find Gen, who Senku points out survived because he carried fake blood packs on his person. While being cured back to health by Senku and the others, Asagiri asks Senku if he's able to make a bottle of cola cause he's dying to drink one. Senku tells Asagiri that he is 10 billion percent sure he can make one. And with that promise, Asagiri returns to Tsukasa and lies to him that Senku is truly dead.

Senku and Chrome keep working towards the cure.

Having thought that he killed Senku, Magma proclaims himself the most powerful out of the villagers who will marry Ruri and take over the village as chief. This is when Chrome and Kohaku explain to Senku that the village is holding a tournament in a few months in order to decide the next chief. Since Ruri, the priestess of the village, has turned 18, she will have to marry the winner and become the new chief's bride. They then explain that Magma only has eyes on the chief seat and feels nothing for Ruri. Rather, he would prefer to let Ruri die once he becomes chief so he can do what he wants. Seeing this as an obstacle to his plan of saving Ruri and gaining the village's trust, Senku entrusts Kohaku with the task of defeating Magma while he and Chrome continue their mission on creating antibiotics. Kohaku confronts Chrome saying that he should be the one to marry Ruri since he loves her the most. But since Chrome is weak in combat, Kohaku has to resort to training Ginro and Kinro instead. Chrome replies that it doesn't matter to him as long as he can save Ruri's life and make her happy. And thus Chrome and Senku continue to work hard on making antibiotics.

Trying to adjust the lens for Suika.

In order to formulate antibiotics, Senku requires beakers and flasks, which can withstand acid. Thus, Senku decides that the next thing they should gather is sand, which contains silica used to make glass. With everyone's help, they are able to gather enough sand and produce their first glasses, which Senku uses to produce lenses in order to help Suika, who is revealed to be nearsighted. Afterwards, it is quickly discovered that Kinro too is nearsighted and is the root cause of why his fighting ability is so poor despite his talent. Yet, even after discovering that he can cure his sight with glasses, Kinro is too proud to ask Senku for help.

Finishing the science lab.

Although they now have the ability to make glass, without proper technique and experience, Senku and the others aren't able to create what they need. Thus, they resort to kidnapping Kaseki, the craftsman of the village. At first, Kaseki refuses to help. But after being peaked by the fact that Senku can produce glass and is angered at how wasteful and terrible Senku and the others are at making it, Kaseki reluctantly decides to help them. And with Kaseki's help, they are able to create the perfect lab for Senku to use. After seeing the lab, Senku can't help but reminisce about the time his father sold his car to buy him a lab.

The dangers of hydrogen sulfide.

While in his lab, Senku is disturbed by Ginro and Kinro with Ginro proclaiming that since Senku has so much, surely he can make a silver spear for the two of them. Senku smiles and offers to make Ginro a silver spear, but only if Ginro is willing to help them find the hardest formula for antibiotics. Ginro agrees and thus Senku makes him a silver spear. But little did Ginro know that the silver spear Senku made for him is going to be used to detect a poison so deadly that it can kill a person within seconds.

Preparing to find the acid.

As they make their way to the top of the mountains, Senku warns Ginro that he best focus the point of his spear far ahead of him because once the silver on his spear turns black, that will signal his death. Senku then explains that the item they're going to procure is called sulfuric acid, which only exists at the top of the mountain in the Emerald Lake. But the Emerald Lake produces deadly poisonous gasses called hydrogen sulfide and sulfur dioxide. In order to detect the distance of the gas, Ginro's spear will be used because hydrogen sulfide and sulfur dioxide will react with silver, turning it black.

Two scientists ready to snatch sulfuric acid.

After gauging the distance of the poison gas, Senku and the others return home in order to produce protective masks that can filter the poison. But upon making the masks, Senku tells Chrome to stay while Senku alone will go to procure the sulfuric acid. Chrome protests, saying he too will go with Senku. Senku then reminds Chrome that they are the only two scientists left in existence and one of them has to survive. Senku volunteers himself to go because he has a higher chance of getting the sulfuric acid unharmed due to his knowledge. Senku is ready to pass on his knowledge of science to Chrome before he leaves when Chrome outright refuses it. He tells Senku that two scientists on the job are better than one and that failure will not be an option, thus convincing Senku to let Chrome go with him.

Acquiring Sulfuric Acid.

At the Emerald Lake, Senku advises Chrome to remain calm as heavy breathing can cause the mask's filter to fail and can lead to his death. They approach the Emerald Lake, but acid spews out and burns part of Senku's mask tube. Chrome is able to warn Senku in time, but loses his step and almost falls into the Emerald Lake. Luckily, Ginro arrives in time with his own mask to save Chrome from falling. They are able to procure the sulfuric acid and return home.

Village Games Arc

Now the only thing they need to make the antibiotics is alcohol to which Kaseki reminds then that they can get it from the village if they win the tournament. With Senku's return, he, Chrome, and Ginro, along with Kohaku, decide to enter the tournament to procure the alcohol and to increase their odds of winning. Their goal is to weaken Magma before his fight with Kinro, which will give Kinro a bigger chance of winning. Unfortunate, Kinro and Magma end up paired for the first match.

During the fight, Mantle gets caught trying to interfere and is told off, forcing Senku to dispose of his own various poisons, blades and arrows he was planning on throwing at the combatants. Before the second round begins, Kohaku is told Suika is in danger so she runs off to save her. Just before Kohaku returns, Magma orders Mantle to surrender the match, disqualifying Kohaku from the tournament and Senku wins by default.

The next match is between Senku and Ginro. It is obvious that Senku's plan worked. With Magma out of the picture, all they need to do now is throw the match for Chrome to win. But with Ruri proclaiming that she will dedicate her life to whoever wins, Ginro betrays Senku and starts to fight in order to win and become chief. Annoyed with his intentions and betrayal, Senku uses Suika's helmet that was laying around as leverage to knock the wind out of Ginro's crotch. Senku becomes the victor in the match.

With only Senku and Chrome as the contestants, Senku is determined to surrender for Chrome's happy ending. To Senku's surprise, Chrome falls unconscious during the match and Senku is declared the winner. Senku, who reluctantly marries Ruri, is more than happy to accept the alcohol that is given to the winner. When the chief tells Senku that he is married to Ruri by right, Senku merely states that he wants a divorce and escapes to his lab to create the antibiotic.

Now with all the of the ingredients, Senku is in the process of going over the 25 steps in making antibiotics. Asagiri, who is just wasting around, is confronted by Kaseki and is forced to help out. With everyone's help, Senku is able to make the antibiotic and thanks everyone for the help. As for Asagiri, Senku is able to make a cola and leaves it for him as they promised.

Senku quickly enters the village and gives the antibiotics to Ruri. But instead of improving her situation, the antibiotic worsens her health, which the village chief scorns Senku for. But for Senku, it is a good thing because the symptoms that Ruri is now showing have paved the road to determine the sickness. Senku determines that Ruri has pneumonia. Senku suggests attacking the illness by using sulfa drugs, but Ruri's father rages in contrast, forbidding Senku from feeding his daughter anything else. That's when Chrome, Kohaku, Kaseki, Ginro, and Kinro voice their opinion and their support of Senku's action. Having so many people put their faith on Senku, Ruri's father concedes and Senku is able to cure Ruri.

Village Origins Arc

Senku administers the Sulfa drug to Ruri, and examines her lungs. He performs an autopsy on a mouse, and confirms it's a bacterial infection. Suika calls them back to Ruri, whose condition seems to have worsened. Kokuyo tries to strangle Senku, but Senku tells him that it means the drug is working correctly and that Ruri can be cured. With Ruri cured, Senku properly becomes chief. To Senku's surprise, he learns that he and the village share a name.

Ruri approaches Senku, revealing that she has heard the story from her mother, the previous priestess, about Senku and his father Byakuya. This makes Senku realize that everyone in Ishigami Village are descendants of his adoptive father, who avoided the petrification because he was in space. Ruri then recites the 100th tale, titled "Senku Ishigami", which tells of Senku's growing up and Byakuya's experiences with the other astronauts before and after the petrification.

Kohaku realizes that this means everyone is related to Senku, but he tells her that Byakuya isn't his biological father, and also that they're also hundreds of generations apart anyways. During the subsequent celebration, Ruri takes Senku aside to tell him the final piece of the story, as only he should hear it. It contains Byakuya's final wish for Senku. They arrive at the graveyard, and Ruri leaves Senku to mourn the loss of his father.

Vs. Hyoga Arc

Gen reports that a warrior named Hyoga is coming with a war party. Senku teams up with Magma and Gen to bluff about having guns, which chases off Hyoga's men. Hyoga confirms Senku is still alive, and informs him Tsukasa will be eager to hear the news.

Senku knows that Hyoga and his men will return during a rainstorm as the gunpowder will be useless, so he tries to improve the Kingdom's chances as much as possible before then. He creates new glasses for Kinro and Suika, then assembles the whole town to make katanas. He also creates a small knife which Gen uses to sabotage Hyoga's spear. After Suika runs off as bait to save the village, Kohaku and Senku save her from the poison gas using the gas masks they made earlier.

Communications Arc

He tells the villagers that making the revival formula is relatively easy, except that they are missing nitric acid. As nitric acid is also a component in making gunpowder, Tsukasa will soon figure out that the deception of gunpowder won't work either. Senku explains that the enemy's army is growing, with Gen confirming that the threat is only getting bigger whilst they are missing a critical source for gunpowder. Kohaku enthusiastically declares agreeing with Senku on a preemptive strike while Senku claims he will make a most powerful weapon in human history - a cellphone.

The scientist elaborates that by using communication technology, they could utilize espionage to gain more information on the opposing army's movements as well as convey information between themselves, thereby possibly even reducing casualties to 0 and decisively winning the war at the same time. When asked who can be the potential double agent in Tsukasa's empire, Senku mentions his friends Taiju and Yuzuriha who have already infiltrated it for a long time.

Once the schematic for making a phone is made, a discouraged Gen laments on the amount of materials that need to be transformed and used to craft it, while Chrome and Kaseki are greatly excited to see the things needed to be made. Senku states that no matter how long the pathway to making it is, as long as rules are followed, the outcome is a complete success. He briefly explains to Chrome and Kaskeki how the voice's small output of electricity is amplified by cellphone, creating electromagnetic waves which are then received on the other end. In order to make a cellphone, the first item that needs to be crafted is a cotton candy machine, much to Gen's shock. Senku goes on to tell him that the centrifugal force spinning the material would force the tiny strands of sugar out of the small holes in the body. This same mechanism can be applied to making fine wires for the cellphone, in form of gold wires. As Chrome rushes to gather the gold necessary, Senku stops him, as they first need to test it out on cotton candy in case it's a failed device.

Senku gathers the hardened sake from the fire caused by Homura and boils it in order to acquire rock sugar. When Gen jokingly thanks Homura for starting a fire once cotton candy is made, Senku asks Gen if he knows what Homura's character was like. Ginro hears this and starts teasing Senku about liking petite girls, with Sapphire, Ruby, Garnet and Shovel leaning in to listen. Senku, however, states that the reason behind his question is being spied on by Homura. By observing them, Homura will know whether there's a major change in activity or an attempt at escaping.

Gen informs Senku that Homura is extremely loyal and has utmost respect for Hyoga, so the possibility of her defecting is slim to none. Senku in return offers some cotton candy for Homura which the latter eventually consumes. The scientist is hoping to goad Homura to his side by offering her sweets, which Gen praises. Ruri, however, thinks that Senku wanted to comfort Homura who's all by herself, despite the obvious strategic goal behind the gift of sweets. Senku warns the villagers that they have a few months before the onslaught of Tsukasa's forces. He is impressed by Gen's imitation of Tsukasa, who also agrees that the time interval is relatively short. As Kohaku and Chrome worry about Taiju and Yuzuriha's safety, Senku assures them that nothing will happen to them as they are most likely regarded as hostages. In order to stop Tsukasa, they will need to craft a cellphone by spring. Senku scolds Ginro for improperly spinning the cotton candy machine as Ginro is getting frustrated with the process. When the latter asks how they can be so calm even when having a short time interval to make a cellphone, Senku replies that he's being serious about the cotton candy's flavor - Gen filling in that the imperfections in the cotton candy would mean imperfections in the gold wire that's planned to be made afterwards.

Before utilizing the gold for wiring, they need to pin down the cause of imperfections first. It turns out that while Kinro and Ginro were spinning the machine, the rotational force was being decelerated while turning the opposite way, therefore creating the problem. The previously made generator doesn't go fast enough and a kilometer long rope is impractical for the brothers' endurance. Kokuyo adds that it's also a problem of resources, as the village cannot afford to waste all manpower on cellphone work since it needs to prepare for the winter. With little option left, Senku improvises by creating gears to ease the burden on the spinners. He notices that Kohaku's shield would serve as a perfect gear material while Kohaku agrees to use it, much to Kokuyo's shock.

As it turns out, Chrome got an idea to make a waterwheel, and after 3 hardworking days, he returns with Kaseki to Senku to let him know of their new creation. After Senku witnesses the craft himself, he is pleasantly surprised that the two crafted it with little knowledge of the mechanism beforehand. Senku happily declares the end of age of manpower - and an arrival of automated machine power.

Gen is amazed at the new invention, as Senku tells him the people he should praise are Chrome and Kaseki, who truly deserved it. Despite so, Senku states that the waterwheel is not yet complete, as the electricity is coming at a trickle. In order to story the electricity, the village will need batteries. The two lead plates are stored inside a small tank filled with sulfuric acid - Senku commenting on how easy it is to store electrical power while Chrome complains that the endeavor still took immense amounts of effort nonetheless. Senku then mentions that they will need 5 more batteries like these to connect them all.

Ginro realizes that since an automated source of power is made, he wouldn't need to spin the manual generator with his brother anymore. He inquires Senku about it, who confirms this and the both brothers greatly relieved to hear it. As Senku enthusiastically attempts to carve himself a gear, it breaks apart, much to his chagrin. Chrome and Kaseki join him once again, excited about the "back-and-forth" gear mechanism. The villagers celebrate the newfound automated generator.

Some time later, Gen approaches Senku to ask what the craftsman group is making. Senku replies that they are making a light bulb. However, as the gold wire reaches temperatures of 2000 degrees, it will start to melt - they need to reinforce the body with an adhesive. While making the bulb, it suddenly breaks apart. Chrome gets frustrated at the difficulty of making a light bulb, as Senku calls him out on his resolve.

Kaseki makes a remark about how life has become more interesting ever since Senku came around, stating most villagers feel the same way. When asked by Chrome on what they are going to do about the wire burning out like last time they created light, Senku goads Chrome into coming up with an answer on his own - which is to take away the air. Senku uses mercury's properties to create a vacuum inside a light bulb, thereby preventing the wire from burning out. On Christmas, the group lights the tree with light bulbs they've created. When Kaseki reflects on the time it took to make light bulbs, Senku replies that everything is going according to the plan.

Gen realizes that today is Christmas while Senku noticed it as a mere coincidence, prompting Gen to call out Senku's intentional lying. Chrome gets another idea - now that they have light bulbs and batteries, they can further explore the caves they went into beforehand. In accordance to future projects, Senku says that the group will require an additional heap of materials, which makes Chrome excited. To Kaseki's inquiry on what the next project is going to be, the former declares a new objective - to make a vacuum tube, an antecedent of the computer. To Gen's bewilderment on what this device actually is, Senku explains that it represents the "gear" in an electric sense, the heart of a cellphone.

The scientist goes on to elaborate to Kaseki that they will have to make a vaccum inside of it, just like they did with the light bulb. While attempting to do so, their glass vessel breaks; which Senku notes is from the expansion of the metal wires. The group is amazed with the amount of necessary precision required to make such a device, and manpower is set on trial and error in order to craft it. Chrome returns, now with an adequate amount of copper just in time for Senku to produce a copper tube. Since it's hollow, it won't be able to expand and break the vessel during the heat-up process of creating a vaccum space in it. However, another problem arises as the bamboo filament burns out. As the crew questions what material they should use next, Senku sadly states that such a resource does not exist in this era. After countless attempts of the villagers to find a proper material for the vacuum tube, Senku is woken up by Gen to watch the sunrise of the new year, much to his annoyance. Coincidentally, once the group gathers around the sunrise, Suika's newly found stone begins shining in a beautiful blue color. Senku quickly realizes that Suika has found tungsten, an exceedingly rare metal that can withstand heat and would be ideal for the project they are making. He commends Chrome and Suika on their discovery, and picks Magma to be a mining partner for an additional trip to retrieve more tungsten, surprising everyone.

As they approach the cave, Senku comments on the lukewarm temperature allowing them to explore the cave better. A worried Chrome asks the former about his decision of bringing Magma to the cave exploration, noting that Magma is a dangerous individual who might seize the opportunity to attack him. Senku retorts that it's their only option, as even though the tungsten is situed in this cave, they would require Magma's strength to mine it. Chrome responds that Magma may very well push them in the rough terrain of the cave and escape with an excuse that it was an accident, thereby erasing science from the village and allowing Tsukasa to attack. Senku replies that Magma hasn't even thought that far ahead.

Further along the line, Senku abruptly stops, explaining that they came upon a rock called "mica". It's a rock of such brittle structure that it can break while stepping on it and they could fall into a hole, impressing Chrome who comments on the nature's traps. All of a sudden, Magma notices the floor under Senku slowly crumbling, and quickly reacts by pushing him away - only for the floor under the former to fall apart. Senku manages to grab Magma's arm, as Chrome warms him that he himself might fall with Magma as the rocks are starting to deteriorate. Chrome blames Magma for wanting to send Senku to a cave pit, which Magma plays along with. He shouts that weak men like them became leaders, while it's the rules of nature for the strong to rule and get women as it has always been. He claims that the strong rule the world in this age, stating that weaklings being able to take over the muscle in Senku's world are no more. He laments on the fact that if it weren't for Senku, he'd be the ruler of the village. Senku and Magma both fall into the hole during this exchange.

As Senku moves around, an annoyed Magma orders him to stop shuffling around. The former responds that he's merely taking measurements of the cave, and that it's better to do so than screaming, falling into the pit and burying them alive, like Magma is doing. They are interrupted by Chrome who begins pouring in water, Senku warning Magma once again not to scream at Chrome as that will assure the rocks fall on them. Chrome explains that by pouring water into the pit, it will allow the duo to get out of the hole. Senku does an inner calculation, determining that they might just barely make it in the 6 hours necessary to fill the pit. Senku teaches Chrome how to make a tool for transferring water with Magma's help. To this, he explains to Magma that in the old world, the weaklings didn't "dominate" the strong, it was just a simple division of labor. In the old world, everyone was useful, and who the boss was didn't matter. While Magma was still very dissatisfied about losing the position of the village chief, Senku promises him amazing things humanity has conjured up which he would've never saw if it wasn't for him. As they fill the pit, Senku is showing signs of hypothermia. Chrome's anxiety is broken by Magma, who propells Senku out of the hole, threatening to kill him if he's becoming boring. Senku confidently states that science can never be boring.

The scientist is grateful for Magma's absurd strength, as without it, they would need to hug each other to maintain warmth, disgusting both Chrome and Magma at the thought of it. He congratulates the group when they find a large ore deposit, which has transformed into a collection of rare materials over the years. Senku states that without Magma, the collection of these materials would be impossible. Magma hurls the digging tools at the rock, reflecting on how easy it would be to eliminate both Chrome and Senku. The latter makes a remark about how Magma instinctively saved him, and wasn't actually trying to kill him. After this, an ecstatic Chrome notes how it's the bonds of friendship, not rocks, that were the most important thing made in this exploration, disgusting Magma and Senku who berate him on his awkwardness. Surprisingly, on their way back, Senku is blindfolded by Magma and taken back to the village, being greeted by Gen. He arrives at the conclusion that the village decided to trade Senku's life for their stability. Instead however, the entire thing is a ruse in order to gift an observatory to an unsuspecting scientist. Senku reacts rationally, saying that the telescope could assist them in battling Tsukasa, much to everyone's chagrin. Gen confesses that he came to know Senku's birthday after he wrote the day he was depetrified and told him the amount of days he's lived, the reasoning for remembering this is that he has liked Senku for his attributes from the start. The latter, although very glad, reacts with apparent "disgust" towards these emotions.

On Kohaku's question on how to extract tungsten from the rock, Senku says that it's the hard part in the process. The rocks are quickly smashed by Magma and Mantle, with Senku saying they needed to grind them to dust anyway. Surprised about Magma's behavior, Kokyuo asks Senku what happened in the cave - Senku is unsure how to answer. To remove debris off tungsten, they will have to use hydrogen, which involves heating it in a bottle. Senku scolds Kaseki and Chrome for being to hasty, as heating a bottle will simply melt it, so they have to use precision and melt only the metal. He motivates Chrome to think for himself, saying that him being his professor is needless, and is promptly annoyed by Gen not understanding the purification process. Senku is delighted to see the purified tungsten, but at the same time surprised by the huge amount of material Kaseki and Chrome brought. Nevertheless, the equipment is more than enough to make the filament and the group celebrates its creation. Senku, however, notes that it will take serious glasswork to integrate the entire project. The scientist begins delegating different tasks - such as making a powerful vacuum device for Kaseki, a gold wire for Suika and the kids, and crafting plastic to Chrome and himself. With combined effort of the village, the cell phone's body is finally complete.

Senku creates the microphone using grilled seaweed and wine residue and the group is surprised at the ease it translates voice into electricity. This vigor is soon cut off by Senku who states they need another cellphone body like this, since just one part is useless without the other. The phone however, will still work as a landline if they stretch the cables over a long distance.

After Ruri compares his phone to a bee and talks about a story about a bee talking with the dead, he and Gen realize she is talking about a record player. He discovers a time capsule containing a message from Byakuya. He explains how the record found in the capsule actually works, guessing that it was probably the astronauts who helped him make it, but Byakuya was likely the one who came up with it. With a bone needle, Senku plays the record to the rest of the village, much to their excitement. The speech becomes sentimental, although Byakuya stops himself knowing his son is not particularly fond of it. The latter goes on to show the group Lillian's singing to soothe their hearts in case the villagers are still awry of Senku's presence. With their amazement, Senku vows to show them all what humanity has made until the fateful day. Later on, Senku is approached by Gen in secrecy, who claims he has got an intriguing offer for him.

Using the phone, he talks to Taiju and Yuzuriha for the first time since they split up.

Later on, Senku notes that he'll need Taiju and Yuzuriha, who enter the woods and find Senku. After a year apart, Senku is happy to reunite with his friends.

He brokers a ceasefire with Tsukasa in exchange for depetrifying his sister Mirai. Senku theorizes that the petrification will cure Mirai's braindeadness, which it does..

Hyoga attacks Tsukasa and he and Senku teamup to defeat Hyoga. Due to his injuries, Senku cryofreezes Tsukasa.

Age of Exploration Arc

He depetrifies Ryusui and sets out to find oil. He later constructs a camera for Minami and is used as the model for the first photograph in the Stone World.

Senku officially becomes recognized as one of the Kingdom of Science's Five Wise Generals.

The Kingdom recreates a motorboat, as they prepare to use it, Senku speaks with Taiju, who asks about Senku's love potion. Senku laughs as he tells Taiju that it was merely gasoline and Ryusui remarks how they made it to the point before the petrification in inventing.

During the test run, Senku and the others receive a transmission from an unknown person.

After a year of building, he and the Kingdom of Science are able to build the Perseus.

Treasure Island Arc

Senku asks Ruri to tell him all 100 of the 100 tales, with a focus on minerals. He believes Byakuya may have left important scientific materials in the Soyuz capsule, and thus they head towards Treasure Island to find it. Senku then shows off the Perseus' design then makes seasickness medicine for those afflicted.

A small search party is made to find the capsule, consisting of Senku, Gen, Kohaku, and Soyuz. While examining a clue, they're informed by Gen that everyone on the Perseus has been petrified. They decide to continue inland and track a young woman using forensic science. They find her and ask if she knows where the capsule is, but they're interrupted by a riot beginning in Amaryllis's village. Senku subdues them with tear gas, and Amaryllis asks Senku for help with infiltrating the master's harem and defeating him.

Amaryllis explains what she knows, and Senku points out that the petrification has rules, which means it's reproducable and thus scientific. They agree to help her. To improve their chances of getting into the harem, Senku says they'll need the lab. They return to the captured Perseus and are attacked by Kirisame spotting them. Kohaku fights her and calls out for the lab, and Gen bluffs that Kohaku is simply possessive of her boyfriend "Lab". Kohaku and Senku share and uncomfortable kiss to prove it, making Kirisame run off in embarrassment.

Suika and Ginro deliver the lab to Senku safely, but not before Senku deters pursuers with a stinky surprise. Senku then creates several concoctions to give Kohaku a makeover with Amaryllis' help. Amaryllis also dresses up the other men to see if they're viable candidates for the harem selection. During the selection, Senku whips up a one-way crystal radio in the shape of an earring to send messages discreetly to Kohaku. He then explains the infiltration plan to Kohaku before beginning work building a drone.

To test the motors, Senku sends a small mouse-like vehicle towards Kohaku, which she sends back with a pictographic message, telling them that they found the platinum. Senku then delivers a silent bomb in the form of plaster to help Kohaku break through the concrete encasing the precious metal. Platinum sand is returned, and Senku is impressed with his father's diligence in collecting it thousands of years ago.

Using the platinum, Senku begins producing nitric acid once more. The next mission will be to revive Kaseki to help build the drone. Soyuz and Ryusui try finding their friends' statues by free-diving, but they're unable to without diving equipment. Senku makes it, and soon enough they find the statues. Kaseki is revived and he helps Senku build the drone.

With new information delivered by Amaryllis, Senku and the others establish that there's only one Petrification Weapon, and that the Head of Petrification Kingdom is a statue. Senku then prepares for a battle against the Petrification Kingdom, and makes a pistol in case Moz gets out of hand. The drone is completed, and the battle begins. Senku notices Kirisame throws a fake, and tells everyone to retreat. They give chase around the island until Ibara petrifies everyone.

Senku obtains the petrification device.

Senku succeeds in dodging the petrification wave thanks to a well-timed throw of revival fluid, then fights Ibara alone with tools of science. He defeats him with the help of Ryusui, leaving him alone on the island. Senku then works to revive everyone and repair the damaged Perseus. Why-man then sends a new message: "12,800,000 meters, 1 second", said in Senku's voice!

New America City Arc

After Senku's voice is mimicked by Why-man, Senku is eager to find answers. Senku asks the newly-revived Matsukaze what he knows of the devices, and after Matsukaze tells him that they came from above, Senku runs off to make a parabolic antenna. With this, they confirm Why-man is on the moon, and that going there will be their next goal. Early the next morning, Senku and Kohaku discuss the Soyuz astronuats, and then begin packing to leave the island.

The Perseus returns to the mainland and Senku uses the petrification device's remaining power to petrify and revive Tsukasa, then informs him of their plan to fly to the moon.

Senku has Yuzuriha and Kaseki build a globe so he can demonstrate their journey plan for collecting resources to reach the moon. Senku is impressed by the model, and then explains how they'll establish the new cities. Setting off for America, Senku and Ryusui get into an argument over which route to take. They settle the dispute over a game of poker, with both sides cheating. Ultimately, Senku wins. To celebrate, Francois makes custom drinks for everyone with Senku's help in making gum syrup.

On the journey, Senku shows off their GPS, then improves the system with Chrome's sunstone, allowing them to locate the sun even in overcast weather.

When they reach San Francisco, Senku sees the statues of the people who were petrified on the Golden Gate Bridge, and vows to save them. Senku's team then split off to locate the corn they need, but get attacked by alligators. Within one of the beasts, they find an ear of corn. They continue upstream, following a trail of corn. That night, they're attacked by a mysterious assailant with a gun. Senku is gleeful that the mystery person must be backed by an evil scientist who's been growing corn, an opponent Senku refuses to lose to.

Senku points out that their enemy has slightly more advanced technology than them, at least in terms of weaponry. They then get attacked by a plane, but thanks to Senku's quick thinking and Kirisame's skills, they take it down using acetylene gas. They then steal the abandoned plane. Senku then has Gen, Chrome, and Kohaku track the enemy to their base.

Senku answers Chrome's call, but tells him to limit interaction as the enemy may be listening. Sure enough, the Perseus receives another call; from Dr. Xeno! Listening to the call, Senku simplifies the science talk and tells everyone that Xeno has a device to make unlimited amounts of nitric acid for the revival fluid, but is using it to make weapons rather than revive people. Senku announces to the crew that they'll fix up the plane so they can stop future aerial attacks.

When a woman named Luna arrives asking for help escaping Xeno, Senku approaches her and kindly helps her. The crew are taken back by his altruistic behavior, but Senku simply wants to extract information from her. To butter her up, he has Francois make ice cream. While eating, Luna comments that if Xeno was present he would describe the ice cream as "elegant", shocking Senku. Senku reveals that he knows Xeno, as he was his former science mentor. Senku then explains their past together.

With the new knowledge, Senku believes they can use their dead Medusa to their advantage, but they're interrupted by Stanley's sniping. Senku is shot, but not before designing a makeshift bulletproof vest. Severely injured, he is patched up by Luna and Francois, leaving Chrome in charge of science. He tries to buy them some time by giving Xeno the petrification device.

While tending to his wounds, Luna asks Senku if he'll be her boyfriend. He is surprised, but agrees. Later, they're attacked by an airplane again, and the still-injured Senku takes to the skies with Ryusui piloting, resulting in an intense dogfight. Both planes are then taken down by Senku's acetylene gas carpet bombing attack, and they discover that Charlotte was the enemy pilot instead of Stanley.

Afterwards, the non-captured members of the Kingdom of Science regroup, discuss plans, then steal one of Xeno's ships. Senku then calls Brody for diplomatic reasons, and gives him the revival fluid recipe in exchange for cooperation and safety for the captives. Brody agrees. Nikki is left in charge of the rest of the negotiations as her English is the best, and Senku's team narrowly escapes Stanley by boat thanks to a distraction by the others. Farewells are called out as Senku and the gang head towards South America.

South America Arc

After escaping Stanley's grasps, Senku sets them on a course to South America and sits down with Xeno to discuss what they know of Why-man. They pinpoint the origin of the beam: 3° 7' South latitude, 60° 1' West longitude. During one of their fuel stops, they find Chelsea, who they clothe and make glasses for. She helps them chart a new, faster course over land to their destination using motorcycles. Senku declares they'll need rubber to make adequate tires.

To distract Stanley, Senku suggests they use the amphibious mobile lab to redirect them towards the Panama Canal while they continue southward. Once safe, Senku begins processing rubber. After some more travel, they stop the ship and repurpose it to make one boss motorbike and five baby bikes under Senku's direction. While the team are escaping Stanley by bike, Leonard attempts to follow them by plane, however Senku had filled the primitive engine with sugar water causing it to crash soon after takeoff.

Senku tells the Corn City squad to retrieve and examine the petrification device under the guise of using it as a doctor in case anyone gets injured. He makes a fax machine so that Chelsea can direct them to the location of a watchmaker. At the base of the Andes mountain range, Senku builds a scale to weigh everyone and redistribute their weights across the bikes better. He then builds a ropeway to cross a large canyon, and soon after they reach the edge of the Amazon rainforest.

For safety, Senku makes them rubber boots and animal repellant using army ants, then they use a raft to travel down the river. Soon, they reach ground zero, and discover a pyramid of petrification devices.

Senku starts testing a handful of devices, causing the others to jump for cover, however none of them activate. As all the batteries are dead, Senku tells them to start smashing devices so they can begin examining how they work. Meanwhile, they build a new anti-radar ship covered in devices to sneak past Stanley.

With several samples, Senku, Xeno and Kaseki begin taking apart the devices and sorting through the recognizable pieces. They discover each device has a blackened diamond inside, though some have cracks along the cleavage planes instead. Senku decides these must be dud batteries, and calls Corn City to have them make a diamond.

After the group in America are done with the diamond, Senku tells them that next step is to dig up some natural diamonds. He also cuts off communication with the group in America, knowing they would be tracked by Stanley. Travelling via motorcycle, Senku states that the final battle will happen deep in the Amazon at the stone sanctuary.

Once in Araxa, Senku has the group build a fort and put up defenses while revealing that he is aware Xeno contacted Stanley, and that Stanley will be arriving ahead of schedule. He also reveals this will be their final battle against Stanley. Senku has Kaseki and Chrome work on fixing Medusas because their battle plan requires at least one working device to petrify the whole area.

With no progress on the devices, Senku gives them a little pep talk, which makes Kaseki realize that the cleavage planes are aligned in a specific direction. Despite Kaseki's desire to tell Joel of their discovery, Senku says they can't. Thanks to a final message from Francois, Senku locates Stanley's exact position.

With no time left, Senku allows Kohaku and the other fighters to delay Stanley with guerrilla warfare to try and buy Kaseki more time to finish the device. It's also revealed that Senku helped design gunfire sound traps, set up around the fort.

With the revival team captured and the fighters likely dead, Senku makes the tough decision to send Luna and Chelsea away as backup revivers. Very soon, Stanley and his unit attack, and Senku saves Kaseki from the exploding workshop. The diamonds are lost, and Senku realizes there's only one thing they can do at this point: call Corn City and tell them to petrify the whole world, no matter the cost.

Senku hopes to do what he did on Treasure Island and throw a bottle of revival fluid up at the right time, but he gets shot (again), and the bottle smashes. Awaiting his fate, Senku shares one final conversation with Xeno and explains his philosophy of inventing. These words move Xeno who accepts defeat at Senku's hands. Petrified again, Senku immediately started counting to retain consciousness.

New Stone World Arc

Thanks to Suika's efforts, Senku is revived after being petrified for 236,109,753 seconds. Senku congratulates her for her success, and Suika hugs him. Senku praises her for her method and for choosing to revive him first. He uses one of the other methods to create more nitric acid, and Suika helps him make more alcohol. After 16 days, they have 16 doses, and revive and clothe their friends. The group celebrates. On Gen's suggestion, Senku finds Tsukasa by the river, and they privately discuss how Hyoga had definitely died before being petrified, meaning petrification can heal even death.

Senku revives Xeno to help with the rocket plan, and tells him of the device's power. They decide to keep it secret because they don't want riots. Senku rebuilds the Perseus and leaves Xeno to build the rocket. To power the new Perseus, Senku decides to use biofuel. Half a year later, Xeno makes his superalloy and Senku finishes his liquid fuel. They test the first version of a jet engine, whose concept is then reused to propel the Perseus. Splitting the Kingdom into 3 teams, Senku's group will continue establishing new cities across the globe.

Globetrotting Arc

On the way to Spain, Senku explains the three crafting projects needed to go to the moon: the space suits, the spaceship, and the rocket itself. Once in Spain, Senku obtains fluorite to build a better telescope. When the New Perseus' journey to India was halted by a blockage in the Suez, Senku suggests using one of Xeno's rockets to blow it up from a distance. In India, Senku helps Ryusui locate his brother's statue. Senku doesn't push Sai to become the Kingdom's expert mathematician, but later discovers he may have an equally important use when building the computer.

Senku instructs the Corn City team on how to build the more tedious computer components, while explaining the basic principles of its mechanism to his shipmates. Senku then makes a fax machine to send schematics between the New Perseus and their cities. When Corn City completes their calculator, Senku participates in a competition between their best mathematicians, versus Magma on the calculator. Magma wins, though Senku confirms his answer is correct.

While in Australia, Ukyo rendezvouses with Senku to handoff the petrification device. He demonstrates that the problem was never with Kaseki's batteries, but instead with the device itself. Senku finishes by saying that the astronauts going to the moon will use the working device to petrify themselves, and wait for humanity to retrieve them at some point in the future. Before returning to Japan, Senku stores the device in a safe. In Indonesia, Senku modifies the mobile lab to act as a rice planter and harvester, then later reminisces about Byakuya while eating onigiri.

Moon Mission Arc

The computer is completed and delivered to Japan, so Senku constructs a CRT television to use as a monitor. When the petrification device later goes off, petrifying Gen and Yo, Senku narrowly dodges the beam using his prior knowledge of how the beam expands, then returns to assess the scene. Without time to experiment properly, Senku decides the best option is to simply remove the battery for now. The team then collect materials so Senku can build a TV camera, and uses them as monitoring devices for the Medusa.

Some time later, Senku reunites with Xeno on Treasure Island to observe the first Stone World rocket launch, with the goal of putting a satellite in space. It fails, and fails repeatedly, with different reasons each time, but Senku and Xeno don't lose hope. On their 7th try, it succeeds and they celebrate.

During Chrome and Suika's science conference, Senku attends as a "super scientist" alongside Xeno. They listen to Chrome's proposal and agree that it's viable. Senku then speeds through the process of recreating the internet to give the international scientists better communication.

Senku trains for the astronaut selection, and is selected to go as the team's scientist. At Ryusui's request, Senku agrees to revive Stanley to be the team's pilot, as Ryusui believe he is better suited for the job. Senku gives Stanley a little quiz upon his revival, which he passes easily. Before leaving Earth, Senku takes everyone's requests for inventions that could impove the citizens' quality of life. He also finally makes Taiju's smartphone, as the screens are needed for the rocket's cockpit.

With their training completed, Senku, Kohaku, and Stanley board the rocket. Senku bids farewell to his friends before strapping in and petrifying their team, ready for launch. While stoned, he counts down the seconds until liftoff. He is revived a little earlier than the other astronauts, and takes the time to remember and mourn his father. He then enjoys space ramen with the others.

After the first docking is completed, Senku realizes there's a problem with the ship's electronics, and tries to locate the problem while Stanley and Kohaku attempt to dock the other pieces without visual aids. He discovers a petrified piece of hair caused a short-circuit, and the panel needs replacing. After watching Ryusui's goofy attempt at turning himself into a reaction wheel, Senku writes "E=mc²" on his shirt once more.

When Senku takes the first step on the moon, he forgoes everyone else's suggestions and simply says "get excited!" While traveling on the moon's surface, Senku's voice is mimicked once more by Why-man in an attempt to get Kohaku to free the device from the capsule. After they are thrown off their rover, Senku spots the dark mass and exclaims he knows who Why-man was.

Senku has a long discussion with the petrification devices behind the Why-man phenomenon, and they explain the story from their point of view. Senku attempts to strike a deal with them, but ultimately humanity isn't what they were expecting, and they leave Earth far behind. However, one device remains, as it was interested in Senku's proposition even if the probability of it working is low. The astronauts return home to Earth with their alien prize, and are awarded medals. Some time later, Gen visits Senku in his lab, and Senku reveals that his current science project is a time machine. He hopes to use it to prevent countless deaths of both humans and petrification devices.