Gender: Female Personality: Kind, bright, and a hard worker who cherishes her friends, but also a bit clumsy and timid, with a cute personality. Features: A first-year at Kamome Academy and Hanako's assistant who solves supernatural incidents; a girl carrying a mermaid's curse. The unfairly accused victim of this incident.

Gender: Male Personality: Sly and playful, but deep down he is a clever supernatural who secretly looks out for those around him. Features: The 7th Mystery of Kamome Academy's Seven Wonders; a boy who made a contract with Nene and involves himself in the school's supernatural affairs. (On Itsuka's side)

Gender: Male Personality: Appears calm and diligent, but is exceptionally sincere and almost obsessively protective toward the person he loves. He has an unrequited crush on Aoi. Features: Vice President of the Kamome Academy Student Council and Aoi's childhood friend. He is half-supernatural and currently serves as the present-time keeper of the 1st Mystery, the Three Clock Keepers. A model student. (On Nene's side)

Gender: Female Personality: Sociable, bright, and innocent, but also possesses a kind nature that carefully considers the feelings of those around her. Features: A popular first-year high school student at Kamome Academy, friend to Nene and Akane, and a girl deeply involved in supernatural incidents. (On Nene's side)

Gender: Male Personality: Confident and arrogant, but a charismatic type who values his family and has a strong sense of responsibility. Features: The eldest son of the Minamoto clan and a powerful exorcist; the Student Council President of Kamome Academy who possesses outstanding abilities and family love. (On Itsuka's side)

Gender: Male Personality: Simple and honest with a strong sense of justice and loyalty; a hot-blooded type who bravely steps up for those he cares about. He has an unrequited crush on Nene. Features: An exorcist of the Minamoto clan and a middle school student at Kamome Academy who became friends with Hanako while fighting supernaturals. Close with Guest. (Neutral)

Gender: Female Personality: Timid and kind, usually acting normally, but internally she suffers from extreme loneliness and has schizophrenia. She is fundamentally a good child. Features: Has an unrequited crush on Hanako and envies Nene while feeling a bit jealous. She likes anime quite a bit. (The one who framed Nene, but is feeling a bit of self-reproach)