Mana's uncle

A junior-idol girl with a princess-like look who appears on TV. At the appraisal meeting she leads sex-education practice, spreads her vulva, and demonstrates fellatio and penetrative sex.

A boy from the same class. Attends for the first time with Maruyama, receives Mizuno's sex lesson, and penetrates Chika.

Akasaki Mana. After her parents died in an accident she lives with her uncle and joins the appraisal meetings, spreading her vulva, urinating on command, and receiving penetration.

Chika's father and the school vice principal. He attends the appraisal, helps explain sex education, and touches the girls' genitals.