Having failed to get into graduate school, with no girlfriend, no money, and no prospects of success with his band, Tsurugi's life has reached rock bottom. One day, after watching the video of Aya Matsuura's song “Momoiro Kataomoi”, he becomes obsessed with the idol singers of “Hello! Project”, and plunges into the idol geek lifestyle. However, as time passes, he and his buddies all find other things just as important as the idols and begin to move on.
Unfortunately the movie In Those Days is not yet available on Disney Plus.
| Production | Toshie Tabata | Casting |
| Production | Daisuke Wada | Line Producer |
| Writing | Mikito Tsurugi | Original Story |
| Costume & Make-Up | Rumi Terasawa | Makeup & Hair |
| Sound | Hasegawa Hakushi | Music |
| Editing | Takashi Sato | Editor |
| Writing | Masanori Tominaga | Screenplay |
| Costume & Make-Up | Momomi Kanda | Costumer |
| Directing | Rikiya Imaizumi | Director |
| Camera | Hiroshi Iwanaga | Director of Photography |
| Production | SUGIMOTO Yusuke | Producer |
| Lighting | Daiki Katô | Gaffer |
| Art | Yukihisa Satosu | Production Design |
| Art | Masahide Nakazawa | Decorator |
| Art | Tetsuji Tatsuta | Decorator |
| Sound | Asuka Nemoto | Sound Mixer |
| Sound | Asuka Nemoto | Sound Recordist |
| Sound | Yosuke Hamada | Sound Mixer |
| Production | Kimiaki Tasaka | Producer |