Hikaru Tada. A gloomy loner who literally just glows. Male. Height: 171cm. Favorite food: Tsukemen. Ability: Luminescence (he just glows). The straight man of the group. Generally calls others by their surnames, but calls Busujima 'Busujima-san'. Close friends with Kuroi. First person: I (casual/masculine).

Masayoshi Kuroi. According to Busujima, he's a 'dark-type extrovert'. Male. Favorite food: Fried chicken. Hates: Vague Japanese cuisine. Ability: Supergravity Celestial Body (Black Hole) — can create black holes. The funny man of the group. Calls Tada 'Hikaru', Taira 'He-ko', Misato 'Mirai', Yamikawa 'Riko-tya', and Busujima 'Bussu' (Busujima tells him every time not to call her that). Close friends with Tada. First person: I (casual/masculine). Calls Hitoshi 'Hitoshi-san'.

Shoko Taira. A gyaru who can travel to parallel worlds. Female. Favorite food: Tapioca (?). Height: 160cm. Ability: Parallel World Travel (Butterfly Effect). Calls Tada 'Pikarun', Kuroi 'Masa', Misato 'Mirai', Yamikawa 'Riko-tya', and Busujima 'Sumisumi'. Calls Hitoshi 'Aniki' (or 'Stupid Aniki' when in a bad mood). Close friends with Misato. First person: I (casual/feminine).

Mirai Misato. A gyaru who can see the future. Female. Height: 158cm. Favorite food: Tapioca (?). Ability: Precognition. Calls Tada 'Pikarun', Kuroi 'Masa', Taira 'He-ko', Yamikawa 'Riko-tya', and Busujima 'Sumisumi'. Close friends with Shoko Taira. First person: I (casual/feminine).

Riko Yamikawa. An explosive high school girl. Female. Height: 156cm. Favorite food: Pink Monster (the pink energy drink). Ability: Landmine (explodes upon touching something). Calls Tada 'Tada-kun', Kuroi 'Kuroi-kun', Taira 'He-ko-chan', Misato 'Mirai-chan', and Busujima 'Sumi-chan'. Close friends with Busujima. First person: I (polite/feminine).

Sumire Busujima. A sharp-tongued high school girl. Female. Foul-mouthed. Ability: Spitting Venom (charge-up type). Generally calls others by their surnames, but calls Yamikawa 'Riko'. The straight man of the group. Calls Hitoshi 'Super Creepy Long-hair'. Close friends with Yamikawa. First person: I (polite/feminine).

Hitoshi Taira. Shoko Taira's older brother. University student (Economics Department; he joined because it was easy to get into). Often stalks Tada for some reason. Ability: Average — can average out any object, space, etc. Dislikes injections. Calls Tada 'Hikaru-kun' and Shoko 'Shoko'. First person: I (casual/masculine).

The homeroom teacher for Tada's class. Calls everyone by their surnames. Ability: Adaptation — can adapt to anything.