Summer Wars
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…
Where to watch in Japan
Available to stream with Netflix, Amazon Prime Video, Hulu, U-NEXT, Netflix Standard with Ads, Amazon Prime Video with Ads.
Netflix
Amazon Prime Video
Hulu
U-NEXT
Netflix Standard with Ads
Amazon Prime Video with Ads Streaming in other countries
Sorted by distance from 
Japan
KR South Korea
RU Russia
DE Germany
AT Austria
IT Italy
US United States
ES SpainShowing 10 of 15 countries.
Cast, directors & writers
Ryunosuke Kamiki
Kenji Koiso (voice)
Hitomi Miyauchi
Natsuki Shinohara (voice)
Mitsuki Tanimura
Kazuma Ikezawa (voice)
Sumiko Fuji
Sakae Jinnouchi (voice)
Ayumu Saito
Wabisuke Jinnouchi (voice)
Takahiro Yokokawa
Takashi Sakuma (voice)
Kiyomi Tanigawa
Yukiko Shinohara (voice)
Mutsumi Sasaki
Kazuo Shinohara (voice)
Mieko Nobusawa
Mariko Jinnouchi (voice)
Takuya Kirimoto
Riichi Jinnouchi (voice)
Sakiko Tamagawa
Rika Jinnouchi (voice)
Ichiro Nagai
Mansuke Jinnouchi (voice)
Takashi Kobayashi
Tasuke Jinnouchi (voice)
Yutaka Shimizu
Shota Jinnouchi (voice)
Kaori Yamagata
Naomi Miwa (voice)
Tagame Tamura
Kiyomi Ikezawa (voice)
Tadashi Nakamura
Mansaku Jinnouchi (voice)
Yoji Tanaka
Yorihiko Jinnouchi (voice)
Hashiya Nakamura
Kunihiko Jinnouchi (voice)
Mitsutaka Itakura
Katsuhiko Jinnouchi (voice)
Mamoru Hosoda
Director · Writer
Satoko Okudera
Writer
Keywords
About streaming Summer Wars in Japan
In Japan, the listed subscription streaming options for Summer Wars are Netflix, Amazon Prime Video, Hulu, U-NEXT, Netflix Standard with Ads, and Amazon Prime Video with Ads.
Our listings also show streaming in 14 other countries, including South Korea, Russia, and Germany. Follow the country guides below to compare providers.
Automatically summarized from TMDB watch-provider listings supplied by JustWatch. Listings fetched . Streaming availability can change. Rental and purchase offers are not included.