Summer Wars (2009)
"Samâ uôzu" (original title)

PG  |   |  Animation, Adventure, Comedy  |  1 August 2009 (Japan)
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Ratings: 7.6/10 from 14,575 users   Metascore: 63/100
Reviews: 45 user | 77 critic | 12 from

A student tries to fix a problem he accidentally caused in OZ, a digital world, while pretending to be the fiancé of his friend at her grandmother's 90th birthday.



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10 wins & 5 nominations. See more awards »



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Cast overview, first billed only:
Ryûnosuke Kamiki ...
Kenji Koiso (voice)
Nanami Sakuraba ...
Natsuki Shinohara (voice)
Kazuma Ikezawa (voice)
Takahiro Yokokawa ...
Takashi Sakuma (voice)
Mieko Nobusawa ...
Mariko Jin'nôchi (voice)
Mutsumi Sasaki ...
Kazuo Shinohara (voice)
Takashi Kobayashi ...
Tasuke Jin'nôchi (voice)
Yôji Tanaka ...
Yorihiko Jin'nôchi (voice)
Kiyomi Tanigawa ...
Yukiko Shinohara (voice)
Hashiya Nakamura ...
Kunihiko Jin'nôchi (voice)
Sakiko Tamagawa ...
Rika Jin'nôchi (voice)
Kaori Yamagata ...
Naomi Miwa (voice)
Takuya Kirimoto ...
Ri'ichi Jin'nôchi (voice)
Mitsutaka Itakura ...
Katsuhiko Jin'nôchi (voice)
Tagame Tamura ...
Kiyomi Ikezawa (voice)


Kenji Koiso, an eleventh grade math genius, agrees to take a summer job at the Nagano hometown of his crush, Natuski. When he arrives, he finds that her family have reunited to celebrate the 90th birthday of the family matriarch. His job is to pretend to be Natsuki's fiancé. Meanwhile, his attempt to solve a mathematical equation causes a parallel world's collision with earth. Written by Chris Evans

Plot Summary | Plot Synopsis

Motion Picture Rating (MPAA)

Rated PG for action violence, some suggestive content, language, mild thematic material and incidental smoking | See all certifications »

Parents Guide:



Official Sites:

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Release Date:

1 August 2009 (Japan)  »

Also Known As:

Summer Wars  »

Box Office

Opening Weekend:

$1,412 (USA) (24 December 2010)


$78,182 (USA) (4 February 2011)

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

1.85 : 1
See  »

Did You Know?


The guardians of Oz are named after John Lennon and Yoko Ono See more »


Takashi Sakuma: Please tell me you didn't break the internet.
See more »


Referenced in Nostalgia Critic: Digimon the Movie (2012) See more »


Bokura no natsu no yume
Written and Performed by Tatsurô Yamashita
See more »

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User Reviews

What an excellent film! It had everything!
13 July 2011 | by (Romania) – See all my reviews

If you can imagine the easy going yet fascinating Hayao Miyazaki stories, with their kind heartedness and deep Japanese roots being mixed with Denou Coil, you will get Summer Wars. It has good animation, a really cute story and features a cyber battle between a Japanese family and a malicious A.I. inside something that can be seen as the future of Facebook.

What I found really nice in the film is that traditional family values are mixed with modern views of the world, a beautiful countryside scenery is mixed with the virtual cyber world of OZ. There are both moral values to be learned from the story as well as the excitement of a crisis and how giving your best can get one past it. I found brilliant the way the scenes of cyber battle were intertwined with scenes of Japanese baseball, birthday then dying rituals, the individual traits of all of the members of the family, all without losing anything, just adding more and more depth to each scene.

I highly recommend it for all anime fans and for people who might become so, after watching a masterpiece like Summer Wars.

24 of 31 people found this review helpful.  Was this review helpful to you?

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