Kirisame (キリサメ) is one of the two strongest warriors in the Petrification Kingdom, the other being Mozu. She is now a member of the Kingdom of Science, replacing Soyuz after he stayed behind at the end of the Treasure Island Arc.
Kirisame is a slender young woman comparable to Kohaku in height, with black dreads with caps at the tips, and stone ornaments in her hair. She has narrow, green-colored eyes and is usually expressionless. She has facial markings of unknown origin that extend from the top of her eyebrows in a curl, similar to Mozu's.
She wears a loose, see-through dress. Kirisame maintains her modesty though bulbous ornaments that cover her chest area and a dark design that covers the front of her lower half. She also wears necklace that covers most of her neck made of stone.
As a child, she looked similar to her current appearance but her hair had two single strands flowing.
Kirisame is a cold, collected individual who, unlike her colleague Mozu, appears more professional, rarely smiling or relaxing, coming off as unflappable. However, she occasionally shows cracks in this personality, for example, towards romance. When Kohaku kissed Senku under the pretense that he was her boyfriend, Kirisame was incredibly flustered. She also blushed at being hinted to have an attraction to Kinro.
Like most Stone World people, she is amazed by new things, such as her own revival and the sights of the sea.
Kirisame is loyal to the head of Treasure Island, unknowingly committing evil in his name due to Ibara's wicked manipulations. After learning she had been duped into unjustly petrifying the islanders for years, Kirisame was angered.
Abilities and Skills
Kirisame is strong and fast enough to overwhelm Kohaku in combat. Mozu vouches for her skill, as he notes that she can't be taken lightly, making her a threatening adversary. However, it should be noted that Kohaku was restrained by her dress and couldn’t fight well. In their recent sparring match, Kohaku proved to be an equal to Kirisame.
Kirisame has "one helluva throwing arm", according to Senku.
She could hunt and kill large American Alligators with help from the others.
Kirisame wielded the mysterious Petrification Weapon and used it under the command of Ibara. She kept it inside a pocket on her chest, when not in use. When fighting Kohaku after her revival, she used two handheld versions of the club-like weapon Mozu uses.
When Kirisame was a child, she spoke to the head of the Petrification Kingdom, and he told her that the range of the Petrification Weapon must never be abused.
5 years before the present, Kirisame and Mozu confronted a group of teenagers attempting to leave Treasure Island. After expressing disinterest in Mozu’s perverted thoughts, she activated the Petrification Weapon and petrified all of the teenagers, with the exception of a young Amaryllis.
She was responsible for petrifying the crew of the Perseus.
Kirisame comes across Kohaku, as the latter tried to reach the captured boat. She overwhelms Kohaku (as the latter was restrained by her dress), though she is confused by her shouting the word "lab". Unknown to Kirisame, this was a code word for the Kingdom of Science to see if a survivor was present. Gen took advantage of her confusion by making it look like Senku was Kohaku's lover and the kissing him to prove it. Flustered at the sight, Kirisame told them to go away as she headed off to join Ibara. 
On Ibara's command, she petrifies Kohaku and Ginro after they learn of the Head's true state, something Kirisame doesn't know. 
To defeat his foes, Ibara orders Kirisame to petrify everyone on the island. She is horrified by the request, as he commands Oarashi to carry it out while she voices her concerns. Very soon, Taiju Oki reveals to the entire island that their leader was a statue all along. Learning of the Head's true state, Kirisame is horrified and turns to face Ibara who activates the weapon and she tries to stop him only to fail. As she is petrified, a tearful Kirisame curses Ibara, while Ibara thanks her for her service.
After the battle, Taiju locates her statue and concerns are made about her statue before Senku revives her. Once she is revived, she is updated on the situation and notes there must be a reason Senku chose to revive her. Senku asks her about Kohaku and Ginro, with her telling him where the statues are and watches them revive. Kirisame blushes after watching Kohaku hug Senku. At the party, she bows to Soyuz after he is revealed to be the son of their ruler.
During a training session with Kohaku, she questions the latter if she was holding back after being in awe at her true skill. Kohaku explained she was limited by the dress. Their display of strength scares Ginro who runs away, to their shock. The pair chase him, before he is rescued however, he is saved by a newly revived warrior who joins the Kingdom of Science.
Kirisame then travels with the Kingdom of Science to America. She is asked by Senku on the Petrification Device and is shocked when he reveals the power supply nearly ran out, due to a command mishap and she remarks that she never considered it deplete.
When interviewed by Minami Hokutozai on her thoughts of the journey, she replies that she has been given the command to aid them and won't fail. Minami notes on her stoic behavior, before she notes that she is similar to Kinro and asks for comments. Kirisame is particularly flustered and blushed at this statement, while denying it.
Kirisame and the other Stone World residents of the crew were amazed by the sights of the ocean such as whales and structures like icebergs. She is excited to reach America. 
When the Perseus arrives in San Francisco, she is happy to be on land and looks forward to hunting. Very soon, the warrior team follows the exploration crew. Soon alligators attack, though Kirisame and the other warriors defeat them and use the Alligator meat to restock on supplies. Kirisame is exceptionally pleased with the hamburgers that Francois made from them. 
During the escape on the river, the group saw they were being chased by an aircraft. Senku quickly combines water and calcium carbide to form acetylene gas, which he gives to Kirisame. Using Taiju as balance, Kirisame throws it at the plane, knocking the engine down and making the plane crash. The Kingdom of Science finds the aircraft downed, which at the mutual behest of Ryusui and Senku is procured. 
She is on board the Perseus when a mysterious woman named Luna approaches, asking for help. Kirisame is annoyed by Mozu being infatuated with her before helping the woman on board. After the others express their mistrust of the situation, Kirisame is annoyed that Mozu wants to help because she is cute.
Kirisame goes back to working on the ship, being confused to watch Luna's odd behavior. She is later disturbed to watch Senku be nice to Luna and thinks he is going to work manipulations on her but is shocked by him outright admitting. She is later amazed by the recreation of ice cream.
While the crew were watching the aerial battle, it came under attack by the American Colony warriors. Kirisame and her group were confronted by a warrior who threatened them into surrendering. 
As the two used to work for Ibara, the two seem to have known each other for a long time. While Kirisame is focused and dedicated to her duties, Mozu tended to focus more on women and fighting. Despite her disgust at him, she did seem to hold respect for his abilities. In turn, Moz never seemed to view her as a potential romantic partner unlike other (beautiful women) despite her not being unattractive. He also did hold some respect for her strength and considered her a good warrior but correctly deduced he would be able to beat her in a one on one fight. The two now work together again under the Kingdom of Science. Kirisame describes Mozu as "the last person you'd want to make as an enemy, but a surprisingly reliable ally" in chapter 166.
They met formally with Kohaku making it look like Senku was her lover and kissing him to prove it. When they fought Kirisame looked down on Kohaku for not being able to fight, since she was restrained by her dress and couldn’t fight well. After Ibara was defeated, the two had a sparring match, with Kohaku proving to be an equal Kirisame. The surprised Kirisame had to acknowledge the impressive skill of Kohaku.
As she was originally working for Ibara under the misconception that he was taking orders from the leader (unaware Ibara had already petrified the real leader and was abusing his power), Kirisame was enemies of the Kingdom of Science. Despite this, once Ibara's deception was revealed and he double crossed her, Senku showed kindness and mercy. He unfroze her, claiming he did so to learn of Ginro's and Kohaku's location after she petrified and disposed of their bodies. Nonetheless, he didn't mind when Soyuz ordered her to follow them. While the two have little interaction, the two seem to get along fine as she is often amazed at the scientific wonders he creates and also surprised at his personality.
No interaction has been seen, though she was responsible for petrifying him and his allies on Ibara's orders. After her induction into the Kingdom of Science, Minami Hokutozai has taken notice of their similar serious attitudes. Kirisame blushed at being hinted to have an attraction to Kinro, while denying it. When the crew is attacked by Stanley, Kinro aids her in taking his plane down.
Initially, Kirisame was loyal to the leader of treasure island who was Soyuz's father. When he arrived at the island with the Kingdom of Science, she was initially under Ibara's orders ()who she believed was proxy for the real leader but that was not the case) and went against him. However, after Ibara's deception was revealed and he was defeated, Soyuz reclaimed his rightful place as leader of Treasure Island she swore her loyalty to him. He sent her with the kingdom of science because he felt they would need strong warriors, and she immediately obeyed.
While the two did not have much interaction, she did seem to care for him as when Ibara concocted a scheme to take down the Kingdom of Science that would require Oarashi being petrified, she showed concern for his wellbeing. Despite Ibara's obvious lack of care for his wellbeing, Oarashi still trusted Ibara over Kirisame's worry for him.
She initially acted under his orders believing his words were the leader of treasure island's words. However, once his deception was revealed, Ibara wasted no time in petrifying and betraying her, while Kirisame referred to him as scum.
- Her name Kirisame is the Japanese word for Drizzle 
|Male||Chrome • Ginro • Jasper • Kaseki • Kokuyo • Kinro • Magma • Mantle • Soyuz • Tetsuken • Ibara • Mozu • Oarashi • Matsukaze|
|Female||Garnet • Kohaku • Ruby • Ruri • Sapphire • Suika • Shirogane • Shovel • Turquoise • Amaryllis • Kirisame|
|Male||Taiju Oki • Senku Ishigami • Gen Asagiri • Chrome • Kaseki • Kinro • Ginro • Magma • Kokuyo • Ryusui Nanami • Matsukaze • Tsukasa Shishio • Hyoga • Mozu • Yo Uei|
|Female||Yuzuriha Ogawa • Ruri • Kohaku • Suika • Nikki Hanada • Minami Hokutozai • Kirisame • Homura Momiji|