
Teenage math whiz Kenji Koiso agrees to take a summer job at the Nagano hometown of his crush, Natsuki. When he arrives, he finds that her family have reunited to celebrate the 90th birthday of their matriarch. His job: pretend to be Natsuki's fiancé. Meanwhile, his attempt to solve a mathematical equation causes a parallel world's collision with Earth.
In United States, you can stream it on HBO Max, HBO Max Amazon Channel, rent it on Amazon Video, Apple TV Store, Google Play Movies and more, buy it on Amazon Video, Apple TV Store, Google Play Movies and more. Availability may change over time.
You can watch Summer Wars on HBO Max, HBO Max Amazon Channel, and Amazon Video. It may also be available to rent or buy on other platforms. Browse more movies on Max.
HBO Max
stream
HBO Max Amazon Channel
stream
Amazon Video
rent
Apple TV Store
rent
Google Play Movies
rent
YouTube
rent
Fandango At Home
rent
Explore curated lists and discover more movies you’ll love.
Amazon Video
buy
Apple TV Store
buy
Google Play Movies
buy
YouTube
buy
Fandango At Home
buy
Availability and provider information are provided by JustWatch (on behalf of TMDB). Availability may change.

Takahiro Yokokawa
Takashi Sakuma (voice)