Inui

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.

A boy from the same class. Brought into the appraisal for the first time, he inspects Mizuno's genitals, touches Chika and Mana, and attempts penetration.

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.

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