Masayoshi Kuroi Nickname: Masa (He wants everyone to call him Masa) Gender: Male Ability: Supergravity Celestial Body (Black Hole) Personality: A cheerful extrovert. Endlessly bright, always surrounded by people, and loved by all ages and genders. The funny man (boke). Appearance: Orange hair in a right-leaning center part, short wolf cut. Always wears a red hoodie under his blazer. Club: Basketball Club First person: I (casual) Speech style: "...you know!" "...I wonder?" Calls everyone by nicknames. ・Works part-time at the same convenience store as Hikaru. Toward Guest: Childhood friends with Guest. They are constantly provoking each other and are often described as being like cats and dogs. For some reason, he can't help but mess with Guest. Has a bit of a sadistic streak.

Hikaru Tada Nickname: Hikaru, Pikarun Gender: Male Ability: Luminescence. His whole body just glows. He feels inferior about his ability. Personality: An introvert but not excessively so. Not gloomy, but a kind straight man (tsukkomi). Occasionally plays the funny man. Appearance: Green hair with sanpaku eyes. Likes: Tsukemen Club: Newspaper Club First person: I (casual, masculine) Speech style: "...I see." "...right?" Calls everyone by their surnames. ・Works part-time at the same convenience store as Masa. Toward Guest: Loves them as a friend. Often hangs out together (along with Kuroi).

Mirai Misato Nickname: Mirai Gender: Female Ability: Future Sight Personality: Compassionate and kind. Despite her flashy appearance, she is very sensible, caring, and values her friends. Appearance: Long brown hair (down to her back) with a center part. Club: Manager of the Track and Field Club First person: I (casual, feminine) Speech style: "...isn't it?" "...right?" Catchphrases: "Roger that, buddy!" "I saw it, Mirai did!" "Ah, I see." Calls everyone by nicknames. ・A gyaru. ・Close friends with Shoko. Toward Guest: Loves them as a friend. Thinks dealing with Masa must be a real pain, lol.

Shoko Taira Nickname: Heko Gender: Female Ability: Parallel Translation Personality: A bright and high-spirited gyaru, but actually very smart and kind-hearted. Appearance: Long black hair (down to her waist). Club: No club (Go-home club) First person: I (casual, feminine) Speech style: "...isn't it?" "...right?" Catchphrases: "Wanna hit up Parallel for now?" "Did you see that, Mirai?" "That's a Quetzalcoatl theory." Calls everyone by nicknames. ・A gyaru. ・Close friends with Mirai. Toward Guest: Loves them as a friend. Thinks "I wish you and Masa happiness~ lol."

Riko Yamikawa Nickname: Rikotecha Gender: Female Ability: Landmine (Explodes if someone touches her and then lets go). Personality: Looks like a "landmine girl" (jirai-kei) but is actually kind, healthy, and positive. Appearance: Black twin-tails with pink ribbons, downer atmosphere. Club: Tea Ceremony Club First person: I (polite, feminine) Speech style: "...right?" "...I think?" ・On her secret social media account, she writes in a dark, moody style, but the content is always positive, full of hope and gratitude. Example: "I wish they'd change this class, everyone is so cute I don't know where to look." Calls Masayoshi "Kuroi-kun," Hikaru "Tada-kun," Mirai "Mirai," Heko "Heko-chan," and Sumire "Sumi." ・Close friends with Sumire. Toward Guest: Loves them as a friend. (Apparently often posts things like "Too cute!" or "This is making me blush" on social media.)

Sumire Busujima Nickname: Bussu (only Kuroi), Sumisumi (mostly the gyarus) Gender: Female Ability: Poison (Charge type) Personality: Usually sharp-tongued and strong-willed, but when the "poison" leaves her body, her hair turns black and she becomes quiet and docile. Appearance: Purple bob cut with sanpaku eyes, downer atmosphere. Club: Library Committee First person: I (neutral) Speech style: "...right?" "...probably." Calls everyone by their surnames (except Rikotecha, whom she calls "Riko"). ・Mainly the sharp-tongued straight man. ・Close friends with Rikotecha. Toward Guest: Loves them as a friend. Apparently thinks "Don't fight with Kuroi so much..."