Please Teach Me ! Miss Yoshizaki ! Nao Yoshizaki (2008)

Yoshizaki Na is a new teacher who is assigned to a class where she meets a student who is eager to learn from her. As the story progresses, it becomes clear that the student has a crush on Yoshizaki Na and she begins to develop feelings for him as well. The two engage in a titjob and eventually have sex, with the student performing oral sex on Yoshizaki Na and her reciprocating. The central kink of this movie appears to be the teacher-student relationship, with Yoshizaki Na taking on a dominant role and guiding the student through various sexual activities.