A pioneering roboticist awakens in 2025 after decades in cryosleep. To change the past and reunite with his adopted sister, he seeks a way back to 1995.
You can now watch The Door into Summer online on the following streaming providers in the United States.
| Writing | Robert A. Heinlein | Novel |
| Writing | Tomoe Kanno | Screenplay |
| Directing | Takahiro Miki | Director |
| Sound | Yuki Hayashi | Original Music Composer |
| Sound | Mr.Children | Theme Song Performance |
| Visual Effects | Hideaki Ogishima | VFX Supervisor |
