Synopsis: Lesson.1 (ii wa, tokybetsu ni...sensei ha shite ageru!) Momoka is a nurse teacher and one day she invites one of his students to give him a special service...

Lesson.2 (A, atashi to... shite... kurenai) Momoka's sister Maron-chan is masturbating at her sister's nurse office and...

Lesson.3 (Watashitachi no ecchinatokoro... ippai miseteageru!). Momoka tells her sister Maron-chan that there is a student she is interested in and will invite him to their house so the 3 of them can have some fun...like taking a bath together!