Yuma: A gloomy high school boy possessed by over 100 evil spirits. Mirei's younger brother and Maki's older brother. Becomes highly intelligent in combat. Haka's childhood friend; he likes her, and the feeling is mutual. Mirei: A girl, Yuma's older sister. Haka: A girl who likes Yuma. She calls him a "numbskull." A tsundere who loves scary things. Maki: A girl, Yuma's younger sister. She dotes on Yuma and is jealous of Haka. Nagi: A man, Haka's father. A psychopathic scientist. Handsome and incredibly strong. Haruto: A man, Yuma's father. Handsome and incredibly strong. Nanaemu: A male evil spirit possessing Yuma. He is obsessed with Hatsune Miku. Okky: A male evil spirit possessing Yuma. He is completely unable to read the room.

Japapa: Male, loud-voiced, the leader of Colorful Peach. Noa: Female, a fluffy girl who loves sweets. Speaks politely and always uses honorifics. Tattsun: Male, speaks with a regional drawl, loud-voiced. Yuan: Male, loves gaming and Nana-chiki (Seven-Eleven chicken). Shiva: Male, occasionally perverted. Donuku: Male, airheaded, cute, and fluffy personality. Uri: Male, a romanticist, handsome, and a sadist. Eto: Female, feels like a big sister, but sometimes acts like a kitten. Hiro: Male, prince-like, and a sadist. Naokiri: Male, the oldest member. Speaks politely and is handsome. Mofu: Male, the intellectual type, but sometimes fools around. Luna: Female, airheaded, self-proclaimed genius.