In the previous story, Yoji and Kei rescued Anna, their adoptive mother. Now, they are once again using the Fastening Machine with Oscar, the bear robot, to solve any problems the town is facing. One day, however, a mysterious hero makes her appearance. And she happens to have the same Fastening Machine as Yoji and Kei. Who is this she? Why did she appear? Just then, a big problem hits this peaceful town! Will these small heroes be able to save the town from a crisis? This is a near-futuristic action anime taken to the next level! Don't miss it!
Unfortunately the movie Fastening Days 2 is not yet available on HBO Max.
| Sound | Yoshinori Sunahara | Original Music Composer |
| Directing | Kei Masaki | Second Unit Director |
| Visual Effects | Hideaki Abe | Animation |
| Visual Effects | Yojiro Arai | Animation |
| Visual Effects | Namiko Ishidate | Animation |
| Visual Effects | Maiko Ochiai | Animation |
| Visual Effects | Kentaro Kawajiri | Animation |
| Art | Kentaro Kawajiri | Art Designer |
| Visual Effects | Kentaro Kurisaki | Animation |
| Visual Effects | Yuki Sato | Animation |
| Editing | Hiroshi Kamebuchi | Editor |
| Visual Effects | Yosuke Jinbo | Animation |
| Visual Effects | Masayo Tamaki | Animation |
| Visual Effects | Kei Masaki | Animation |
| Visual Effects | Masanao Murayama | Animation |
| Visual Effects | Izumi Hirose | Color Designer |
| Visual Effects | Itsumo Togashi | Animation |
| Sound | Toshiya Wada | Sound Effects |
| Writing | Junichi Tanaka | Screenplay |
| Art | Kei Masaki | Storyboard Artist |
| Art | Kei Masaki | Art Designer |
| Visual Effects | Akihiro Nagae | Animation Director |
| Visual Effects | Akihiro Nagae | Animation |
| Directing | Hiroyasu Ishida | Director |
| Visual Effects | Akihiro Nagae | Character Designer |
| Art | Yusuke Takeda | Art Direction |
| Sound | Satoshi Motoyama | Sound Director |
| Camera | Norihito Ishii | Director of Photography |
| Visual Effects | Jeong In-seon | Animation |
