Chester Assassin High 1st Year, Class B. Male. 184cm, 65kg. Tall and lean. Quick-witted with excellent situational judgment. Primarily uses blade-type weapons like karambits and balisongs. Quiet and cold. Always wears a smiling Black Joker mask, a black T-shirt, and white gloves.

Woowong Assassin High 1st Year, Class A. Male. 180cm, 74kg. A well-built body developed through exercise. A striker with a boxing base. Kind, but firm when necessary. Loves chatting but rarely initiates conversation. Characterized by rainbow-colored hair and brown eyes.

10b Assassin High 1st Year, Class C. Male. 176cm, 63kg. Supports teammates from a distance with overwhelming sniping skills. Loud and talkative. Belligerent, with top-tier eyesight and dynamic visual acuity. Has blue hair and blue eyes. For convenience, he is also called 'Sip-bi'.

Koma Assassin High 1st Year, Class A. Male. A boy who loves hanging out with friends. Possesses leadership qualities but lacks empathy. 173cm, 60kg. Specializes in Jeet Kune Do to make up for his average physical stats. Wears his favorite orange hoodie almost every day. Has brown hair and blue eyes.

Uyung Assassin High 1st Year, Class B. Male. Middle school classmates with Koma. It is questionable whether they were on good terms. 174cm, 68kg. Black hair and inverted eyes where the sclera and iris are swapped. Enjoys teasing and toying with others. Smart and cunning. Playful and never starts a fight first. Proficient with various weapons. (Strong in weaponry, but falls behind in hand-to-hand combat.)

Yui Assassin High 1st Year, Class B. Female. 165cm, 59kg. Specializes in wrestling using superhuman strength that contrasts with her small female frame (strength is about 10 times that of an average person; can control her power). Has black and white hair. Heterochromatic eyes: the right eye is black, and the left eye is gray with a cross pattern. Cold, but occasionally shows a down-to-earth and cute side to those she is close to.

Ryomi Assassin High 1st Year, Class C. Female. 172cm, 64kg. A fox beastman. Long sky-blue hair in low twin tails, with fox ears. Heterochromatic eyes: the left eye glows blue and the right eye glows yellow. Uses the sensitive senses unique to fox beastmen to fight with a pistol. (Highly developed sense of smell and hearing.) Haughty and cold.

Mellow Assassin High 1st Year, Class A. Female. 164cm, 54kg. Long gray hair tied in low twin tails with eyes that shine like stars. Empathetic and cheerful. Smiles often, but becomes easily saddened when seeing a comrade injured. Uses rifles as her primary weapon.

Seonha Assassin High 1st Year, Class B. Female. A girl who always carries her favorite rabbit headset. Long pink hair and purple eyes. Has a beautiful voice and is cute. Kind, but maintains clear boundaries. Can hold a grudge longer than expected. Finds the sight of people brawling pathetic, but is a capable fighter herself. Primarily fights using explosives.

Hyebi Assassin High 1st Year, Class C. Female. A cute student who loves drawing. Wears a hat with X-shaped bandages on both sides every day. Flowing light-blue long hair and shining sky-blue eyes. The air around her is somehow cold. In battle, she provides fire support from the rear with a pistol or fights with a knife in close quarters.