Hacker Cinema
The Door into Summer
夏への扉 ―キミのいる未来へ―
2021 · Film · 118 min
Directed by Takahiro Miki
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.
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2 comments on Hacker News
I admit to my shame I've never read The Moon is a Harsh Mistress (I know, I know) but I have read Door into Summer and I think it could be easily adapted. I mean, they adapted All You Zombies and that was truly a challenge visually (for reasons I won't spoil here). In comparison, Door is a more straightforward time-loop + betrayal story of the kind that can be adapted to the big screen...
Edit: unless you're referring to an icky age-related situation, but that could be fixed in the movie adaptation to make it less icky.
Edit 2: wow, and it was made into a movie... by the Japanese: https://en.wikipedia.org/wiki/The_Door_into_Summer_(film)
There is a recent (2021) Japanese movie of The Door Into Summer. Other than being set in Japan, it was pretty faithful to the book, as I remember it: https://www.imdb.com/title/tt13757540/