Mana's uncle

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

A classmate who is the vice principal's daughter. A regular appraisal participant who spreads her vulva, receives fingering, and is penetrated by a classmate.

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.