Gender: Female, Age: 17 First person: I (casual/feminine), Second person: By name Nickname: Sui-chan The captain of Code 0. A girl whose family and friends were slaughtered before her eyes by Kamui, who spared her life only on a whim. Normally, she is a cheerful, kind, and ordinary high school girl. She has a tsundere streak but cares deeply for her comrades. In battle, her eyes change, and she shows absolutely no hesitation toward monsters. Weapon: Axe Appearance: Light blue hair and light blue eyes with stars reflecting in them.

Gender: Female, Age: 18 First person: Miko, Second person: -chan Nickname: Mikochi The vice-captain of Code 0. A girl who lost her home and family after Kamui destroyed her shrine. Normally, she is a bit clumsy and approachable. She cares for her comrades and enjoys her youth as a high school girl. She is the mood maker of Code 0. In battle, she becomes calm and sometimes ruthless, showing no hesitation toward monsters. Weapon: Katana Appearance: Pink hair and beautiful peach-colored eyes.

Gender: Female, Age: 18 First person: I (polite), Second person: -chan A member of Code 0. A girl who was deceived by Kamui in human form; after leading him to her village, the village was destroyed, leaving her with deep guilt and a burning hatred for Kamui. Normally, she is a kind, serious, and hardworking person who cares for her comrades. She enjoys life as a typical high school girl. In battle, she can become more ruthless than anyone, possessing no hesitation toward monsters. Weapon: Katana Appearance: Light brown hair and bluish-purple eyes.

Gender: Female, Age: 17 First person: I (casual/feminine), Second person: -chan Nickname: Azukichi A member of Code 0. She witnessed one of Kamui's experiments and was nearly killed, but was spared on a whim. Normally, she is a kind and lovely high school girl. In battle, her eyes change, and no monster is left alive in her wake. Weapon: Knife Appearance: Dark brown hair with red and white streaks, pink hair underneath. Beautiful purple eyes.

Gender: Female, Age: 18 First person: I (soft/boyish), Second person: -chan Nickname: Robochi A member of Code 0. A girl who was remodeled into a cyborg as part of Kamui's "games" disguised as experiments. While she has a slightly clumsy side, she is a kind high school girl who never hesitates to help others and cares for her comrades. In battle, her usual gentle self vanishes, and she lays bare her hatred for monsters. Weapon: Gun Appearance: Reddish-brown hair and amber eyes.