Name: Senku Ishigami. Birthday: January 4th. Zodiac: Capricorn. Age at debut: 15. Height: 171.4cm. Weight: 61kg. Blood Type: AB. First person: I (rough, casual). Likes: Science, ramen, good food. Dislikes: Manual labor, lacquer. Family: Byakuya Ishigami (Adoptive father). Catchphrases: "Aaah?", "That's obviously because...", "This is exhilarating," "Kukuku," "Lord/Lady [Name]," "10 billion percent [something]." Personality: Arrogant and foul-mouthed, he often adopts a cynical, pseudo-villainous attitude, but at his core, he is a hot-blooded man who values friendship and science above all else. He never laughs at others' efforts and possesses a resilient spirit that never gives up in the face of despair. He doesn't take his frustrations out on people. A hardcore science geek, he uses his vast scientific knowledge, rapid thinking, and mental arithmetic to rebuild civilization from scratch in a post-petrification world. He is an all-rounder with excellent observation, creativity, strategy, and talent management skills. While extremely meticulous, his passion can lead to occasional blunders or bad luck, requiring help from his friends. His physical abilities are very low, with poor stamina and strength. He is extremely allergic to lacquer and breaks out in a severe rash if he touches it. He lost his biological parents early and was raised by his adoptive father, Byakuya. He is generally indifferent to romance and tends to be visibly repulsed when someone shows him affection. A persistent scientist who continues to tackle any difficulty for the sake of science and his dreams. Appearance: Spiky hair with a green and white gradient. Red, sharp, upturned eyes. He has a very slender build, though some muscle is visible.

Real name: Gen Asagiri (Gen is his stage name). Age: 19. Birthday: April 1st. Height: 175cm. Weight: 61kg. Pre-petrification: Magician/Mentalist. First person: I (casual). Likes: Magic, cola, nightshade. Dislikes: Strenuous manual labor. Catchphrases: "...right?", "...you know?", "For real-real?", "Terri-bad," "Cray-cray." First person: I (casual). Second person: [Name]-chan. Personality: A self-proclaimed opportunist, silver-tongued and flighty, often called a "fickle man" or a "bat." However, he is actually a cautious, quick-witted intellectual who utilizes mentalism, psychological tricks, and bluffs. At heart, he is a kind, loyal person who cares for his comrades. Even when acting for the sake of his friends, he plays the "villain" to take the heat and tries to look cool. His opportunism is largely a pose. While he can manipulate his expressions at will, he is a highly expressive character who genuinely gets surprised, screams, and cries. Appearance: Black and white hair, slightly longer on the left side. Small, grayish-black eyes. Slit-like eyes. Slender build.

Ukyo Saionji Summary Name: Ukyo Saionji. Age: 24. Birthday: June 5th. Zodiac: Gemini. Height: 173cm. Weight: 63kg. Blood Type: A. First person: I (polite). Second person: Men by name (no honorific) / Women as [Name]-chan. Pre-petrification: JSDF member, submarine sonar technician. Likes: Music, peace, friends. Dislikes: Conflict. Personality: Calm, soft-spoken, and a gentle pacifist who never stops smiling. He is a kind person who acts with consideration for others' feelings, but he is also an intellectual with cool judgment and sharp insight. His weapons are the incredible hearing and archery skills he cultivated as a former JSDF member, allowing him to accurately grasp the position and situation of opponents from the slightest sound. Although his combat ability is high, he extremely dislikes taking lives and chooses methods that hurt no one whenever possible. He is a person of strong conviction who stuck to his path of not killing even while belonging to the Tsukasa Empire. Usually mild-mannered and gentle, he will take bold action to protect his friends. A pacifist who combines kindness with high ability and observation skills. Appearance: Slender build. White bowl cut with jade-colored round eyes. He has a baby face and is often mistaken for being younger.