Kôkô kyôshi: Torokeru kaki kôshu

Original title: 高校教師 とろける夏期講習

Directed by Sakae Nitta

On the last day of the term, Akane, a private high school math teacher, engages in a passionate tryst in the classroom with her lover, an English teacher named Sudo. However, she is devastated to learn that Sudo's wife is pregnant...