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Samâ uôzu
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Summer Wars (2009) More at IMDbPro »Samâ uôzu (original title)

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Summer Wars -- Kenji, an young math genius, takes a summer job to be near his crush, Natuski. While getting involved with Natsuki and her family, he discovers a mathematical equation that is causing a parallel world's collision with earth.


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7.6/10   16,463 votes »
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Mamoru Hosoda (story)
Satoko Okudera (screenplay)
View company contact information for Summer Wars on IMDbPro.
Release Date:
1 August 2009 (Japan) See more »
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. Full summary » | Full synopsis »
Plot Keywords:
11 wins & 4 nominations See more »
User Reviews:
An ambitious anime and beautifully executed See more (47 total) »


  (in credits order)
Ryûnosuke Kamiki ... Kenji Koiso (voice: Japanese version)
Nanami Sakuraba ... Natsuki Shinohara (voice: Japanese version)

Mitsuki Tanimura ... Kazuma Ikezawa (voice: Japanese version)
Takahiro Yokokawa ... Takashi Sakuma (voice: Japanese version)
Mieko Nobusawa ... Mariko Jin'nôchi (voice: Japanese version)
Mutsumi Sasaki ... Kazuo Shinohara (voice: Japanese version)
Takashi Kobayashi ... Tasuke Jin'nôchi (voice: Japanese version)
Yôji Tanaka ... Yorihiko Jin'nôchi (voice: Japanese version)
Kiyomi Tanigawa ... Yukiko Shinohara (voice: Japanese version)
Hashiya Nakamura ... Kunihiko Jin'nôchi (voice: Japanese version)
Sakiko Tamagawa ... Rika Jin'nôchi (voice: Japanese version)
Kaori Yamagata ... Naomi Miwa (voice: Japanese version)
Takuya Kirimoto ... Ri'ichi Jin'nôchi (voice: Japanese version)
Mitsutaka Itakura ... Katsuhiko Jin'nôchi (voice: Japanese version)
Tagame Tamura ... Kiyomi Ikezawa (voice: Japanese version)
Eiko Kanazawa ... Noriko Jin'nôchi (voice: Japanese version)
Chigusa Takaku ... Nana Jin'nôchi (voice: Japanese version)
Yutaka Shimizu ... Shota Jin'nôchi (voice: Japanese version)
Naoto Adachi ... Ryohei Jin'nôchi (voice: Japanese version)
Riisa Naka ... Yûmi Jin'nôchi (voice: Japanese version)
Sumire Morohoshi ... Mao Jin'nôchi (voice: Japanese version)
Yuki Imai ... Shingo Jin'nôchi (voice: Japanese version)
Rikito Ota ... Yuhei Jin'nôchi (voice: Japanese version)
Hinano Minagawa ... Kana Jin'nôchi (voice: Japanese version)
Ayumu Saitô ... Wabisuke Jin'nôchi (voice: Japanese version)
Sumiko Fuji ... Sakae Jin'nôchi (voice: Japanese version)

Michael Sinterniklaas ... Kenji Koiso (voice: English version)

Brina Palencia ... Natsuki Shinohara (voice: English version)
Pam Dougherty ... Sakae Jin'nôchi (voice: English version)

Todd Haberkorn ... Takashi Sakuma (voice: English version)
J. Michael Tatum ... Wabisuke Jin'nôchi (voice: English version)
Maxey Whitehead ... Kazuma Ikezawa (voice: English version)
John Swasey ... Mansuke Jin'nôchi (voice: English version)

Shelley Calene-Black ... Mariko Jin'nôchi (voice: English version)

Lydia Mackay ... Naomi Miwa (voice: English version)
Mike McFarland ... Shota Jin'nôchi (voice: English version)

Monica Rial ... Yûmi Jin'nôchi (voice: English version)
Barry Yandell ... Mansaku Jin'nôchi (voice: English version)

Chuck Huber ... Ri'ichi Jin'nôchi (voice: English version)
Cynthia Cranz ... Rika Jin'nôchi (voice: English version)
John Burgmeier ... Tasuke Jin'nôchi (voice: English version)

Christopher Sabat ... Katsuhiko Jin'nôchi (voice: English version) (as Christopher R. Sabat)
Robert McCollum ... Yorihiko Jin'nôchi (voice: English version)
Brittney Karbowski ... Yuhei Jin'nôchi (voice: English version)
Alison Viktorin ... Shingo Jin'nôchi (voice: English version)
Patrick Seitz ... Kunihiko Jin'nôchi (voice: English version)
Colleen Clinkenbeard ... Noriko Jin'nôchi (voice: English version)
Jennifer Seman ... Kiyomi Ikezawa (voice: English version)

Cherami Leigh ... Mao Jin'nôchi (voice: English version)
Caitlin Glass ... Nana Jin'nôchi (voice: English version)

Bill Jenkins ... Kazuo Shinohara (voice: English version)
Anastasia Munoz ... Yukiko Shinohara (voice: English version)
Jason Liebrecht ... Ryohei Jin'nôchi (voice: English version)
Tia Lynn Ballard ... Kana Jin'nôchi (voice: English version) (as Tia Ballard)

Alexis Tipton ... Additional Voices (voice: English version)
Joel McDonald ... Additional Voices (voice: English version)
Phil Parsons ... Additional Voices (voice: English version)
Liza Gonzalez ... Additional Voices (voice: English version)
Trina Nishimura ... Additional Voices (voice: English version)
Maeghan Albach ... Additional Voices (voice: English version)
Anthony Bowling ... Additional Voices (voice: English version)
Scott Freeman ... Additional Voices (voice: English version)
Mary Morgan ... Additional Voices (voice: English version)
R. Bruce Elliott ... Additional Voices (voice: English version)

Chris Ayres ... Additional Voices (voice: English version)
Kara Edwards ... Additional Voices (voice: English version)
Chris Cason ... Additional Voices (voice: English version)

Sonny Strait ... Additional Voices (voice: English version)
Clarine Harp ... Additional Voices (voice: English version)

John Gremillion ... Additional Voices (voice: English version)

Eric Vale ... Additional Voices (voice: English version)

Mark Stoddard ... Additional Voices (voice: English version)

Grant James ... Additional Voices (voice: English version)
Chris Burnett ... Additional Voices (voice: English version)
Greg Silva ... Additional Voices (voice: English version)
Stephanie Young ... Additional Voices (voice: English version)
Dave Trosko ... Additional Voices (voice: English version)
Jim Foronda ... Additional Voices (voice: English version)
rest of cast listed alphabetically:

Tobias Diakow ... Kenji Koiso (voice: German version)
Shin'ichi Hatori

Bari Suzuki ... Additional Voices (voice)
Ichirô Nagai ... Mansuke Jin'nôchi (voice: Japanese version) (uncredited)
Tadashi Nakamura ... Mansaku Jin'nôchi (voice: Japanese version) (uncredited)

Directed by
Mamoru Hosoda 
Writing credits
Mamoru Hosoda (story)

Satoko Okudera (screenplay)

John Burgmeier (head writer: FUNimation) (english version)

Patrick Seitz  script writer: FUNimation (english version)

Produced by
Justin Cook .... producer: FUNimation (english version)
Gen Fukunaga .... executive producer: FUNimation (english version)
Michael Harcourt .... assistant producer: FUNimation (english version)
Carly Hunter .... producer: FUNimation (english version)
Shin'ichirô Inoue .... executive producer
Takuya Itô .... producer
Mike McFarland .... line producer: FUNimation (english version)
Seiji Okuda .... executive producer
Yuichiro Sato .... producer
Nozomu Takahashi .... producer
Takafumi Watanabe .... producer
Original Music by
Akihiko Matsumoto 
Film Editing by
Shigeru Nishiyama 
Production Design by
Yôji Takeshige 
Production Management
Susie Nixon .... production supervisor: FUNimation (english version)
Art Department
Anri Johjo .... chief art designer (as Anri Jôjô)
Sound Department
Nathanael Harrison .... mix engineer: FUNimation (english version)
Mike McFarland .... adr director: FUNimation (english version)
Kenneth Thompson .... adr engineer: FUNimation (english version)
Visual Effects by
Mihai Cioroba .... research & development: Digital Frontier
Aya Spann .... post production assistant: FUNimation (english version)
Jason Weems .... post production assistant: FUNimation (english version)
Camera and Electrical Department
Casey Barteau .... video engineer: FUNimation (english version)
Sarah Mueller .... lead video engineer: FUNimation (english version)
Michael Rivas .... video engineer: FUNimation (english version)
Brittany Smith .... video engineer: FUNimation (english version)
Animation Department
Hiroyuki Aoyama .... animation director
Hiroyuki Aoyama .... key animator
Koichi Arai .... key animator
Kenji Hachizaki .... key animator
Masaru Hamada .... character designer
Hiroshi Kawaguchi .... key animator
Sawako Miyamoto .... key animator
Takashi Mukouda .... key animator
Satoko Nakamura .... background artist
Katsuyoshi Nakatsuru .... key animator
Tatsuzou Nishida .... key animator
Kazuo Oga .... background artist
Yoshiyuki Sadamoto .... character designer
Masako Sato .... key animator
Atsuko Tanaka .... key animator
Naoki Tate .... key animator
Hideaki Yoshio .... key animator
Editorial Department
Robert Bell .... editor: video: FUNimation (english version)
Christopher Bryan .... editor: video: FUNimation (english version)
Jeremy Jimenez .... senior editor: video, FUNimation (english version)
Daniel Mancilla .... senior editor: video: FUNimation (english version)
Jessie Mancilla .... editor: video: FUNimation (english version)
Ashley Rosse .... editor: video: FUNimation (english version)
Brandon Tyler .... director: video post-production: FUNimation (english version)
Josh Tyler .... video editor: FUNimation (english version)
Music Department
Kae M. Black .... orchestrator
Koji Hajima .... conductor
Yoichiro Kano .... music mixer
Mayuko Katakura .... music engineer
Mayuko Katakura .... music mixer
Randy Miller .... composer: additional music
Akira Morishita .... music programmer
Kozue Okada .... music producer
Eiji Uchinuma .... music engineer
Akira Morishita .... music engineer (uncredited)
Other crew
Freddie Arnold .... subtitling: FUNimation (english version)
Ashley Hayward .... subtitling: FUNimation (english version)
Trenton Jons .... production assistant: FUNimation (english version)
Sarah Alys Lindholm .... production assistant: FUNimation (english version)
Clyde Mandelin .... translator: FUNimation (english version)
Masao Maruyama .... planner
Gino Palencia .... production assistant: FUNimation (english version)
Ben Phillips .... subtitling: FUNimation (english version)
Sarah Sullivan .... production assistant: FUNimation (english version)
Yutaka Tachibana .... production staff
Noriko Takaya .... harmony process
Jon Uzzel .... subtitling: FUNimation (english version)
Tara A. Williams .... talent coordinator: FUNimation (english version) (as Tara Williams)

Production CompaniesDistributorsSpecial EffectsOther Companies

Additional Details

Also Known As:
"Samâ uôzu" - Japan (original title)
See more »
Rated PG for action violence, some suggestive content, language, mild thematic material and incidental smoking
114 min
Aspect Ratio:
1.85 : 1 See more »
Sound Mix:
Australia:PG | Finland:K-11 | Germany:12 | Japan:G | Singapore:PG | South Korea:All | Spain:T | UK:12 | USA:TV-14 (Adult Swim airing) | USA:PG (certificate #46551)

Did You Know?

Mamoru Hosoda completed all 500 pages of storyboards for the film at Denny's, working in hugely long 12 and 16-hour shifts.See more »
Takashi Sakuma:Please tell me you didn't break the internet.See more »
Movie Connections:
Bokura no natsu no yumeSee more »


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1 out of 1 people found the following review useful.
An ambitious anime and beautifully executed, 26 January 2015
Author: TheLittleSongbird from United Kingdom

Summer Wars is one of the most ambitious animes to exist, ambitious doesn't always equal greatness on film as a result of being over-ambitious but Summer Wars is one of those that gets it right. Some characters are better developed than others, the main family members are very compellingly real but some of the side characters are sketchily written. If the film had less characters than it did the character development would have been even better.

The animation is just wonderful though and stylistically unlike any other I've seen, the colours are eye-popping and the backgrounds are so richly detailed and textured. None of it felt confusing to me. The cyber-battles are particularly strong in this regard, the action itself is thrilling and the visuals positively dazzle. Summer Wars has a music score that is both rousing and ethereal, and luckily mood-wise when matched with the animation and the tone of the storytelling it never jars. There is also a thoughtful script that handles its emotional themes very touchingly and remarkably maturely, while the story covers a lot but despite exploring several themes it doesn't feel too much. The family themes are ones that really resonate and charm, and while the message is not the most original it's a truthful message that doesn't patronise. The lead characters are engaging and the voice acting, both in Japanese and dubbing, is dynamic and expressive.

All in all, a beautifully executed anime and shouldn't disappoint anybody who likes Wolf Children and The Girl Who Leapt Through Time. It's ambitious but apart from the writing of some of the characters it doesn't feel too much so. 9/10 Bethany Cox

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Message Boards

Discuss this movie with other users on IMDb message board for Summer Wars (2009)
Recent Posts (updated daily)User
I thought Kazuma was a girl at first... belac77
this movie - I LOVE IT samkaranja549-726-914325
Not that good? rcmoore1
What Would Be Your Avatar? irwanjuanda_ndson
Leave the anime to the Japanese....They're totally The master. namnhan2003
Am I the Only One Who Hates Shota? whitly_12
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