We Couldn't Become Adults (2021) — Cast
Cast
| Sumire | Hé Sū |
| Moemi Katayama | Iwai |
| Masanobu Takashima | Takayuki Haba |
| Takehiro Hira | Keiichiro |
| Masahiro Higashide | Sekiguchi |
| Yuko Oshima | Kichizo Ishida |
| Hideko Hara | Bubba's Mother |
| Masato Hagiwara | Miyoshi |
| Mirai Moriyama | Satō |
| Amane Okayama | Taniguchi Tomoo |
| Sairi Ito | Kato |
| Atsushi Shinohara | Nanase Nobata |
| Eita Okuno | Sanae Miyajima |
| LaSalle Ishii | Mitsuo |
Crew
| Naoyuki Honzawa | Original Music Composer |
| Ryo Takada | Screenplay |
| Naoko Asari | Sound Designer |
| Naoto Kuribayashi | Producer |
| Yosuke Kakegawa | Original Music Composer |
| Tamon Kondo | Associate Producer |
| Teruhisa Yamamoto | Producer |
| Yoshihiro Mori | Director |
| Akiyoshi Yoshida | Director of Photography |
| Naoto Kuribayashi | Production Manager |
| Kaata Sakamoto | Executive Producer |
| Masayoshi Nishi | Sound Recordist |
| Ryosuke Hounaka | Line Producer |
| Yuji Hayashida | Art Direction |
| Akira Sakamoto | Decorator |
| Tsuguhira TKD | Gaffer |
| Hayato Kawai | Assistant Director |
| Norihiro Iwama | Editor |
| Moegara | Novel |