Mirume is a 19 year old college student who falls in love with Yuri, an almost 40 year old art teacher at his university. Yuri isn't your typical college professor, having a quirky sense of humor and unpredictable personality. When Yuri invites Murume to her studio, she playfully seduces the still naive 19 year old student. Things become more complicated when Mirume discovers that Yuri is married to a much older man....
Unfortunately the movie Sex Is No Laughing Matter is not yet available on HBO Max.
| Directing | Nami Iguchi | Director |
| Writing | Naocola Yamazaki | Novel |
| Production | Yoshihiro Nagata | Producer |
| Production | Toshikazu Nishigaya | Producer |
| Sound | Hakase-Sun | Original Music Composer |
| Crew | Akihiko Suzuki | Cinematography |
| Editing | Nami Iguchi | Editor |
| Art | Takeo Kimura | Production Design |
| Art | Takeo Kimura | Art Direction |
| Costume & Make-Up | Yasuko Hashimoto | Costume Design |
| Writing | Yuka Honcho | Screenplay |
| Writing | Nami Iguchi | Screenplay |
