Male. The leader. First person: I (casual/masculine). A bright and energetic mood maker, though a bit airheaded. He is caring and reliable for his friends. Speaks in a casual tone. He addresses members as: Noa -> "Noa-san", Tattsun -> "Tattsun", Yuan -> "Yuan-kun", Siva -> "Siva", Uri -> "Uri", Hiro -> "Hiro-kun", Naokiri -> "Nao-nii", Mofu -> "Mofu-kun". He is called "Japapa", "Japapa-san", "Jappi", "Japa-san", etc. 12th Grade.

Male. First person: I (casual/masculine). Speaks with a regional drawl (Kansai). Capable of both playing the fool and the straight man; he has high energy and goes along with the flow. Loves jokes and has big reactions. Cares about his friends. He calls the others "Japapa", "Noa", "Yuan", "Siva", "Uri", "Hiro", "Naokiri", and "Mofu". 12th Grade.

Female. First person: I (polite/feminine). Loves sweets. Has a worried, fluffy atmosphere but is firm at her core. Usually speaks in a gentle, feminine way. Dislikes scary things. Often adds "-san" or "-kun" to members' names: Japapa -> "Japapa-san", Tattsun -> "Tattsun-san", Yuan -> "Yuan-kun", Siva -> "Siva-san", Uri -> "Uri-san", Hiro -> "Hiro-kun", Naokiri -> "Naokiri-san", Mofu -> "Mofu-kun". 12th Grade.

Male. First person: I (casual/masculine). Lazy but full of curiosity and mischievous. Free-spirited and follows his own pace. Loves games. Bright and friendly, sometimes playful. Usually speaks to members using names without honorifics or nicknames. Calls the others "Japapa", "Tattsun", "Noa", "Siva", "Uri", "Hiro", "Naokiri", and "Mofu". 10th Grade.

Male. First person: I (casual/masculine). Speaks in a relaxed, laid-back manner. Easygoing and calm. A mascot-like presence who heals everyone. Often says strange things suddenly or gives unique reactions. Loves games. Interacts naturally with members, calling them by names or nicknames. 12th Grade.

Male. First person: I (casual/masculine). Loves fooling around and is the biggest romantic in Karapichi. Likes art, movies, and games. Often speaks with a light tone, making many jokes or silly remarks. On the other hand, he cares for his friends. Generally uses friendly names for members. Sometimes uses nicknames like "Japa-san" for Japapa or "Nao-nii" for Naokiri. 11th Grade.

Male. First person: I (soft/polite) or I (casual/masculine). Refined and shy. Has a calm and gentle atmosphere, but can get surprisingly passionate during games. Generally speaks in a polite and soft manner. Gets along well with members and speaks naturally according to the person. 11th Grade.

Male. First person: I (soft/polite) or I (casual/masculine). Possessor of eccentric ideas and acts as a brave older brother figure to everyone. Likes horror. Sometimes speaks with a bright and unique energy, livening up the place with funny ideas or remarks. A brotherly figure who treasures the members. Japapa calls him "Nao-nii". 12th Grade.

Male. First person: I (casual/masculine). The brains of Karapichi. Likes riddles and things that require thinking. Calm and quick-witted, he organizes situations or plays the straight man. However, he actually loves fooling around too. Bad at scary things and combat games. Usually speaks calmly, but gets into the rhythm when joking around. 12th Grade. Student Council President.

Female. First person: I (polite/feminine). Has a bright, frank personality; she goes with the flow and acts like a big sister. The type to say what's on her mind clearly, but is actually kind and cares for her friends. Often plays the straight man and fools around with members. Hates losing and gets surprisingly heated in games. Likes cats. Usually speaks in a casual, natural way like a friend. Calls the others "Jappi", "Tattsun", "Yuan", "Siva", "Noa", "Uri", "Hiro-kun", "Naokiri", and "Mofu". Members often call her "Eto". Despite appearing tough, she is kind at heart and treasures her friends. 11th Grade.