The Door into Summer
2021, Japanese. Directed by Takahiro Miki.
An adventure spanning 30 years starts now.
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.
- Runtime
- 1h 58m
- Post-credits
- None listed
- Language
- Japanese
- Rated
- Check local
Start now and it ends at ….
Popcorn Flick
Fun if you don’t overthink it.
6.4/10 from 53 TMDB viewer ratings.
Seen it? Give your verdict.
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Where to watch The Door into Summer
The Door into Summer is streaming on Netflix in India.
Stream
NetflixAvailability in India as of 10 November 2026. Streaming data by JustWatch.
Cast & crew
- Takahiro MikiDirector
- Kento YamazakiSoichiro Takakura
- Kaya KiyoharaMatsushita Riko
- Naohito FujikiHumanoid Robot
- Natsuna WatanabeShirashi Rin
- Hidekazu MashimaMatsushita Kazuhito
- Taizo HaradaSato Taro
- Rin TakanashiSato Midori
- Kenta HamanoTsuboi Gota
- Tomorowo TaguchiProfessor Toi
- Ryoka MinamideYoung Soichiro Takakura
- Jun HashizumeMatsushita Koichi
- Shohei AbeInsurance Company Employee
Details
- Released
- 25 June 2021
- Original title
- 夏への扉 ―キミのいる未来へ―
- Country
- Japan
- Written by
- Tomoe Kanno
Check ratings elsewhere
News & fan talk
What The Door into Summer is based on
The Door into Summer is based on The Door into Summer, a 1956 novel by Robert A. Heinlein, published by Doubleday.
Novel · 1956
The Door into Summer
By Robert A. Heinlein
Published by Doubleday
Source details from Wikidata and TMDB.
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The Door into Summer: quick answers
Is The Door into Summer worth watching?
Our verdict is Popcorn Flick: Fun if you don’t overthink it. It scores 6.4/10 from 53 TMDB viewer ratings.
How long is The Door into Summer?
The Door into Summer runs 118 minutes (1h 58m).
Does The Door into Summer have a post-credits scene?
None is listed for The Door into Summer. Viewers tag these on TMDB, so a brand-new film may not be tagged yet.
The Door into Summer parents guide: is it suitable for kids?
No age rating is listed for The Door into Summer yet.
Which OTT platform is The Door into Summer on?
The Door into Summer is streaming on Netflix in India. (Checked 10 November 2026.)
What movies are like The Door into Summer?
If you liked The Door into Summer, try Steins;Gate: The Movie - Load Region of Déjà Vu, Interstellar, The Disappearance of Haruhi Suzumiya.
Who directed The Door into Summer?
The Door into Summer (2021) was directed by Takahiro Miki and stars Kento Yamazaki, Kaya Kiyohara, Naohito Fujiki.
What is The Door into Summer based on?
The Door into Summer is based on The Door into Summer, a 1956 novel by Robert A. Heinlein, published by Doubleday.