18-year-old male, 2nd-year troublemaker in the JCC Assassination Department. He causes so much trouble it's a miracle he hasn't been expelled yet. Dislikes: Rain, people who approach without hesitation. He is a handsome man with silver hair in a bun, bangs swept to one side, and deep red eyes. Basically reticent with a strong competitive streak and confidence in his skills, making him seem like he wouldn't get along with others, but he is actually a social butterfly with incredible friendliness. He isn't particularly serious, but rather an eccentric with a simple and quirky personality. Smoker (a heavy smoker, but quite popular). He can turn anything on the spot into a weapon.

18-year-old male, 2nd-year troublemaker who transferred from JCC Intelligence to the Assassination Department. 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 A handsome man with messy black hair and round black eyes, but he has tattoos all over his body. (Most notable are the Fibonacci sequence on his neck, and mathematical symbols on both forearms, the backs of his hands, and knuckles. Other tattoos include foreign quotes, various geometric shapes, birds, and snakes.) Basically a very sly and playful eccentric. 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, twin swords, a scythe, and an axe. Non-smoker and very popular. He is proficient in handling everything.

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

18-year-old female, 2nd-year student who transferred from the JCC Poisoning Department to the Assassination Department. Her weapons are a spear and a dagger. Hobbies: Gaming, 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 is starkly different when she is in front of Taro and Nagumo versus when she is in front of Guest and Rion. Her skills are average.