Dr. Stone Wiki
Dr. Stone Wiki

King of the Stone World is the second episode of the Dr. Stone anime. 


With the Revival Fluid complete, Senku and Taiju choose to revive Yuzuriha first. Before they're able to do so, they're attacked by lions, and are forced to awaken Tsukasa Shishio, an extremely strong man once called the strongest high school student. Tsukasa quickly dispatches the lions, establishing himself as far more physically powerful than the others and becoming the group's hunter.

After Tsukasa destroys a human statue, Senku begins to doubt whether the two share the same goals for civilization.

Plot Details[]

Having successfully released a stone bird from its petrification, Taiju asks Senku what they'll do next with the cure. Senku simply replies that they'll have to free all of humanity eventually, although it would be unfortunate to awaken a murderer first. He gives Taiju the choice of who they will free first, and his choice is obvious.

Taiju protects Senku from the lions

Taiju tries to protect his friends from a pack of lions.

Taiju leads Senku to the giant Camphor Tree, which Yuzuriha is still holding onto after all these years. He apologizes to her for not saving her and plans to set her free from the stone. Senku hands him the cure, but he refuses to free her while she's still naked. Taiju tries to carry her back to camp to place clothes on her, but a lion suddenly appears!

Senku explains that the lions who escaped from the zoo have become the top of the food chain in Stone World. As the boys run away through the forest, Senku adds that the lions haven't seen bipedal creatures yet and are likely being cautious. However, without a proper way to fight back, it's only a matter of time. Taiju decides he must be Senku's shield, but the latter tells him to keep running because humanity needs brains and brawn.

Out of options, Taiju leads his friend to the number one strongest primate high schooler, Tsukasa Shishio. The lions corner them, but Senku frees their new ally with the cure. Tsukasa asks about the situation and immediately kills one of the lions with his bare hands, scaring the rest away. Taiju says he's amazing, and Tsukasa promises to do all the fighting. Senku remains skeptical, however, believing he's too strong to be tamed in the Stone World.

Tsukasa kills the lion

Tsukasa Shishio awakens!

Tsukasa decides to use the lion and pay respect to the circle of life. The trio returns to home camp, where Taiju tells a still-petrified Yuzuriha he will save her as soon as they make more of the cure. Senku takes Tsukasa to the laboratory, where he properly introduces himself. Tsukasa learns the boys have rarely been eating meat and immediately puts himself in charge of hunting.

Senku and Tsukasa work together to preserve plenty of meat, including that night's fish feast. They picnic on a beach, and Tsukasa abruptly breaks a boulder to free a petrified person underneath. Later, Senku asks what's the most important thing in a technological situation. The answer is calcium carbonate, or lime. Taiju collects dozens of seashells and smashes them into powder.

Calcium carbonate has four immediate uses, including upgrading soil, creating mortar, and making soap. Tsukasa admires Senku for his amazing intellect, but the latter believes the strongest human currently alive has ulterior motives. Taiju returns with seaweed to collect more calcium carbonate from and asks what the fourth use is. However, Senku retracts his previous statement and says there are only three uses.

Senku defies Tsukasa

"I'm going to use the power of science to rescue every single person."

The next day, Taiju continues collecting seashells while Tsukasa stares at the water. He says that seashells never belonged to anyone. The same goes for the land and the sea. A long time ago, a boy tried to make a seashell necklace for his sick sister but never got to because of a cruel, drunk adult who claimed he owned that land. Tsukasa punches the head off a statue, effectively killing a man.

Tsukasa claims they can't bring back a world that evil adults taint. Stone World is a paradise, and only the chosen youth should be freed, as this is a chance to reset the world. However, Senku refuses and replies that he'll use the power of science to save every single person trapped in stone.







  • Calcium Carbonate
    • Mortar
    • Soap

Anime to Manga Differences[]

  • In the anime version, Senku is shown creating the crossbow that he will use later.
  • Tsukasa only slashes the headstone of the old man, while in the manga, he destroys it.



Site Navigation[]

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Story Arcs
Prologue Saga
Stone Formula Arc
Chapters 1234
Episodes 12
Vs. Tsukasa Arc
Chapters 56789101112
Episodes 345
Ishigami Village Saga
Kingdom of Science Arc
Chapters 131415161718192021222324252627282930313233
Episodes 5678910111213
Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
Episodes 1617
Stone Wars Saga
Vs. Hyoga Arc
Chapters 4647484950
Episodes 1819
Communications Arc
Chapters 5152535455565758596061626364656667686970717273747576777879808182
Episodes 20212223242526272829303132333435
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Episodes 35Ryusui3637383940
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
Episodes 4142434445464748495051525354
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
Episodes 555657
South America Arc
Chapters 170171172173174175176177178179180181182183184185186187188189190191192193
New Stone World Arc
Chapters 194195196197198199200
Globetrotting Arc
Chapters 201202203204205206207208209210211212
Stone to Space Saga
Moon Mission Arc
Chapters 213214215216217218219220221222223224225226227228229230231232