Happy Ending Story (1991)
- Genre: Science Fiction, Fantasy
- Release Date: 1991-05-25
- Runtime: 1h 28min
- Language: 日本語
- Production Company: NCP (JP)
- Production Country: Japan
- Director: Hiroaki Tochihara
High school student Mikiko travels back in time to the future using a time machine built by Monjiro, the physics club advisor. What awaited her there was the reality that her best friends, Yoko and Tatsuro, were already married and were on the verge of breaking up. Mikiko returns to the modern world with the help of future Monjiro to mend their relationship.
Unfortunately the movie Happy Ending Story is not yet available on HBO Max.
| Production | Hijiri Taguchi | Producer |
| Production | Naoya Narita | Producer's Assistant |
| Directing | Hiroaki Tochihara | Director |
| Production | Yutaka Okada | Producer's Assistant |
| Crew | Mitsugu Yamazaki | Script |
| Art | Shunichiro Shoda | Art Designer |
| Writing | Takuro Fukuda | Writer |
| Writing | Yuji Watanabe | Writer |
| Camera | Hiroshi Takase | Camera Operator |
| Writing | Jiro Kaneko | Writer |
| Costume & Make-Up | Tomoo Haraguchi | Costume Design |
| Editing | Isao Tomita | Editor |
| Sound | Tomohiko Kira | Original Music Composer |
| Sound | Hiroshi Kajiwara | Original Music Composer |