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MTDb โ€บ Best of โ€บ 2009 โ€บ Summer Wars

Summer Wars poster

Summer Wars (2009)

โ€œAlways protect your network.โ€

7.5/10 ยท 1,070 votes 1h 54m pg Science-fictionAnimation

#29 of 242 films from 2009 #142 of 1134 in science-fiction

Directed by Mamoru Hosoda ยท Written by Satoko Okudera

โ–ถ Trailer, images & where to stream

Overview

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 fiancรฉ. Meanwhile, his attempt to solve a mathematical equation causes a parallel world's collision with Earth.

Cast

Ryunosuke Kamikias Kenji Koiso (voice)
Hitomi Miyauchias Natsuki Shinohara (voice)
Mitsuki Tanimuraas Kazuma Ikezawa (voice)
Sumiko Fujias Sakae Jinnouchi (voice)
Ayumu Saitoas Wabisuke Jinnouchi (voice)
Takahiro Yokokawaas Takashi Sakuma (voice)
Kiyomi Tanigawaas Yukiko Shinohara (voice)
Mutsumi Sasakias Kazuo Shinohara (voice)
Mieko Nobusawaas Mariko Jinnouchi (voice)
Takuya Kirimotoas Riichi Jinnouchi (voice)
Sakiko Tamagawaas Rika Jinnouchi (voice)
Ichiro Nagaias Mansuke Jinnouchi (voice)
Takashi Kobayashias Tasuke Jinnouchi (voice)
Yutaka Shimizuas Shota Jinnouchi (voice)

Facts

Release dateAugust 1, 2009
Runtime114 min (1h 54m) โ€” about the same as the 2009 average of 105 min
GenresScience-fiction, Animation
Original titleใ‚ตใƒžใƒผใ‚ฆใ‚ฉใƒผใ‚บ
LanguageJA
Box office$18,434,328
IMDbtt1474276

More from Mamoru Hosoda

Wolf ChildrenWolf Children2012 ยท โ˜… 8.2 ยท 1h 57m The Boy and the BeastThe Boy and the Beast2015 ยท โ˜… 7.9 ยท 1h 59m The Girl Who Leapt Through TimeThe Girl Who Leapt Through Time2006 ยท โ˜… 7.8 ยท 1h 38m BelleBelle2021 ยท โ˜… 7.6 ยท 2h 1m MiraiMirai2018 ยท โ˜… 7.2 ยท 1h 38m

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Questions

How long is Summer Wars?
Summer Wars runs 114 minutes (1h 54m).
Is Summer Wars worth watching?
TMDB users give it 7.5/10 across 1,070 votes, which places it #29 of 242 films released in 2009 in this index (top 88%) and #142 among 1134 science-fiction titles.
Who directed Summer Wars?
Summer Wars was directed by Mamoru Hosoda. Other well-rated titles by the same director: Wolf Children (2012), The Boy and the Beast (2015), The Girl Who Leapt Through Time (2006).
Who stars in Summer Wars?
Ryunosuke Kamiki as Kenji Koiso (voice); Hitomi Miyauchi as Natsuki Shinohara (voice); Mitsuki Tanimura as Kazuma Ikezawa (voice); Sumiko Fuji as Sakae Jinnouchi (voice); Ayumu Saito as Wabisuke Jinnouchi (voice); Takahiro Yokokawa as Takashi Sakuma (voice).
What is Summer Wars rated?
It carries a pg certification in its home market. Ratings differ by country.
Where can I watch the trailer for Summer Wars?
Open the title in the MTDb app for trailers, images and streaming links: https://mv.peoplentools.com/titles/107311.

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Film data and images from TMDB. This product uses the TMDB API but is not endorsed or certified by TMDB. Ratings are TMDB user scores as of 2026-10-05.