体育の時間　ブルマから汗が・・・ (1998)

Three high school girls: Yu, Aya, and Sachiko. Yu is in a secret relationship with her friend's lover. Aya is a assisted dating partner. Sachiko gets along well with a boy at the warehouse. On the other hand, Yasumi, the female physical education teacher, seems to have an unusual relationship with Aida, a member of the track and field club. High school girls in bloomers and a female teacher are having a sexual feast in the school!