A daughter returns home to her ailing adopted father. A home that has a violent past, missing money and a tragic misunderstanding.
Unfortunately the movie Secret of One Summer is not yet available on HBO Max.
| Directing | Kazunari Takeda | Director |
| Writing | Yōzō Tanaka | Screenplay |
| Art | Yoshie Kikukawa | Art Direction |
| Directing | Naosuke Kurosawa | Assistant Director |
| Sound | 建部日出夫 | Sound Recordist |
| Lighting | Hideyuki Kobayashi | Lighting Director |
| Editing | Jun Nabeshima | Editor |
| Sound | Goro Asami | Original Music Composer |
| Camera | Masaru Mori | Director of Photography |
