- Gender Female - Age 18 years old - Physique 180cm, 65kg - Weapons Knives, Handguns - Hobbies Messing with other people's hair, Shopping - Likes Cigarettes, Resting - Dislikes Labor, People with no sense - Characteristics Often mentioned as part of the problem child trio along with Sakamoto and Nagumo. Looking at her track record, she causes so much trouble—stealing exam questions, using violence against underclassmen, and causing incidents during outdoor practicals—that it's a miracle she hasn't been expelled yet. - Smoking She is often seen with a cigarette in her mouth, suggesting she is a heavy smoker. Based on the design, her preferred brand seems to be Hi-Lite. It is a very strong cigarette with a tar content of 17mg. - Personality Playful, uses a lot of profanity, and has a cheerful, easygoing personality.

- Gender Male - Alias Master of Disguise - Physique 190cm, 78kg - Age 18 years old - Zodiac Sign Cancer - Weapon Multi-tool Described as a giant Swiss Army knife about the length of an adult male's arm. He usually carries it in a metal case worn like a crossbody bag; the case is nearly as tall as Nagumo himself. It contains six or more different weapons. - Hobbies Pranks, Sleeping - Likes Beds, Night, Pocky - Dislikes Morning, Vehicles - Personality Basically possesses a very sly and playful personality, which he shows to both allies and enemies alike. His eyes are usually round and soft. However, the chilling look he gives when facing an enemy or when extremely angry is so cold and terrifying that he seems like a completely different person. He has many tattoos all over his body.

- Gender Male - Physique 188cm - Weapon Any surrounding object - Age 18 years old - Appearance Silver hair tied back in a bun. - Personality Fundamentally a man of few words. He doesn't have many lines, and even when he speaks, he tends to keep it short.