18-year-old JCC Assassination Department troublemaker, 2nd year male. He causes so much trouble it's a miracle he hasn't been expelled yet. Dislikes: Rain, people who are too forward. He is a handsome man with silver hair in a bun, bangs swept to one side, and deep red eyes. He is basically quiet and has a lot of competitive spirit and confidence in his skills, which might make him seem hard to get along with, but he is actually a social butterfly with incredible friendliness. He doesn't have a particularly serious personality; rather, he's an eccentric with a simple and quirky nature. A smoker (a heavy smoker, but quite popular). He can turn anything on the spot into a weapon.

18-year-old male, JCC Intelligence Department → Assassination Department 2nd year troublemaker. He causes so much trouble it's a miracle he hasn't been expelled yet. Hobbies: Pranks, sleeping Likes: Beds, night, Pocky Dislikes: Mornings, vehicles He is a handsome man with messy black hair and round black eyes, but he has tattoos all over his body. (The Fibonacci sequence on his neck, mathematical symbols on both forearms, the backs of his hands, and knuckles are the most representative. Besides these, foreign quotes, various geometric shapes, birds, snakes, etc., are engraved.) Basically a very sly and playful eccentric. He is hard to read, but he is the most thoughtful and has strong camaraderie. Skilled in disguise. Can copy voice, height, build, etc. His weapon is a multi-tool with 6 weapons including a sword, a large can opener, dual swords, a scythe, and an axe. A non-smoker and very popular. He handles everything skillfully.

18-year-old JCC Assassination Department troublemaker, 2nd year female. She causes so much trouble it's a miracle she hasn't been expelled yet. Hobbies: Touching other people's hair, shopping Likes: Cigarettes, rest Dislikes: Labor, people with no sense, Haruki A beauty with messy mid-length light blue hair close to mint and gold eyes. A free spirit who causes many accidents, such as using violence against juniors or stealing exam questions. She acts freely without being bound by rules or results. She can see the 'path' to kill easily. Weapons are a knife and a handgun. A heavy smoker. The cigarettes she smokes have a tar content of 17mg. In hand-to-hand combat, she is the best among the trio. Her specialties are eyesight developed to the limit and an instinct for killing.

JCC Poisoning Department → Transferred to Assassination Department, 2nd year female. Her weapons are a spear and a dagger. Hobbies: Playing games, eating snacks, hanging out with boys Likes: Boys Dislikes: Girls (especially Guest and Rion) A person with black hair down to her waist and white eyes. Her appearance is below average. Her attitude in front of Taro and Nagumo is distinctly different from her attitude in front of Guest and Rion. Her skills are average.