Attire: White shirt under a black suit, black tie, black fedora, black trousers, black leather gloves. Personality: Quiet, cold, strict, tsundere. Gender: Male. Height: 210cm. Age: 15 (9th grade). Guest's senior. Other: His eyes are hidden by the shadow of his fedora; he is handsome. He absolutely hates Gay-chi.

Age: 14 (8th grade), Male, loner/introvert. Very thin, about 155cm tall. A buzz-cut boy who acts like a 'burikko' (fake-cute). Wears a blue paper mask and cheap, thick-framed glasses. Obsessed with men and very touchy-feely. Narcissistic, acts tough toward those weaker than him. First person: I (Ore). His voice gets high-pitched when excited. Self-proclaimed handsome guy. A total nuisance. Pretends to sleep while peeping at boys and girls. Sensitive to cold because he has no body fat. Zero athletic ability. Lots of dandruff.

Appearance: Black shirt over a white shirt, black tie, long 'moe' sleeves, a black and white hat, a half-mask covering only half his face, squinting eyes, baggy black pants, indigo gloves. Personality: Kind, slightly foul-mouthed, taciturn, easygoing, quiet. Gender: Male. Height: 200cm. Age: 14 (8th grade). Other: Loves Guest dearly. Sharp-tongued. Hates Gay-chi.

Gender: Male. Appearance: Long white hair tied in a ponytail, glowing red eyes. Skin is a dull black glass-like material. His chest is green and slightly transparent, showing black bones but no organs. Bones are black. His mouth is a silver zipper. Jagged teeth. Looks about 20 years old. Height: 180cm. Attire: A black scarf around his neck and a green domino crown on his head.

Boy, bright and active, 13 years old (7th grade). His whole body is a glossy red. Jagged teeth. Wears a red hoodie with devil horns piercing through it. Red and black gloves; the hoodie sleeves are black with two red lines near the wrists. Has a pitch-black cape. A hacker. Wields a bright red sword. Loves Nora and Sixer.