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Summer Wars

Always protect your network.
2009 | 114m | Japanese

(33406 votes)

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Popularity: 3 (history)

Details

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.
Release Date: Aug 01, 2009
Director: Mamoru Hosoda
Writer: Satoko Okudera, Mamoru Hosoda
Genres: Animation, Science Fiction
Keywords artificial intelligence (a.i.), card game, hacker, virtual reality, computer, family holiday, adult animation, anime
Production Companies KADOKAWA Shoten, Madhouse, Warner Bros. Japan, Nippon Television Network Corporation, VAP, Yomiuri Telecasting Corporation, D.N. Dream Partners, Studio Chizu
Box Office Revenue: $18,434,328
Budget: $0
Updates Updated: Oct 08, 2025
Entered: Oct 08, 2025
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Full Credits

Name Character
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)
Eiko Kanazawa Noriko Jinnouchi (voice)
Chigusa Takaku Nana Jinnouchi (voice)
Riisa Naka Yumi Jinnouchi (voice)
Naoto Adachi Ryohei Jinnouchi (voice)
Rikito Ota Yuhei Jinnouchi (voice)
Yuki Imai Shingo Jinnouchi (voice)
Sumire Morohoshi Mao Jinnouchi (voice)
Hinano Minagawa Kana Jinnouchi (voice)
Name Job
Kentaro Yayama Compositing Artist
Shigeru Nishiyama Editor
Yasuyuki Konno Sound Effects
Mina Okazaki Character Designer
Shigeru Fujita Animation Director
Takayuki Hamada Key Animation
Keiko Itogawa Special Effects
Kenji Hachizaki Key Animation
Hiroko Minowa Key Animation
Kouichi Arai Key Animation
Ayako Hata Key Animation
Mami Yamaguchi Key Animation
Soichiro Matsuda Key Animation
Nobumasa Shinkawa Key Animation
Yuki Hayashi Key Animation
Shigeaki Miyata Compositing Artist
Satoko Okudera Screenplay
Akihiko Matsumoto Original Music Composer
Tatsuro Yamashita Theme Song Performance
Takashi Okazaki Character Designer
Hiroyuki Aoyama Animation Director, Key Animation
Tatsuzo Nishida Animation Director, Key Animation
Ayumi Arahata Special Effects
Nobutake Ito Key Animation
Hideki Takahashi Key Animation
Jun Sekiguchi Key Animation
Akitoshi Yokoyama Key Animation
Miwa Sasaki Key Animation
Mitsuko Baba Key Animation
Aya Takano Key Animation
Yuzo Yamada Key Animation
Hideaki Yoshio Key Animation
Takashi Hashimoto Key Animation
Keisuke Masunaga Key Animation
Naruyo Kiriyama Background Designer
Toshiharu Mizutani Background Designer
Hitoshi Nagasaki Background Designer
Mika Nishimura Background Designer
Naoto Abe Background Designer
Kei Machida Compositing Artist
Naomi Takahashi Compositing Artist
Atsuro Saito Compositing Artist
Yukihiro Masumoto Director of Photography
Chikako Kamata Color Designer
Masaru Hamada Character Designer
Kunihiko Hamada Animation Director
Kumiko Taniguchi Special Effects
Chiemi Irisa Special Effects
Hiroshi Kawaguchi Key Animation
Chie Uratani Key Animation
Yoshiyuki Ito Key Animation
Yasunori Miyazawa Key Animation
Michiyo Suzuki Key Animation
Yoshihiro Kitano Key Animation
Yasuhiro Nakura Key Animation
Sawako Miyamoto Key Animation
Atsuko Tanaka Key Animation
Katsuyoshi Nakatsuru Key Animation
Katsushi Aoki Background Designer
Shinichi Uehara Background Designer
Satoko Nakamura Background Designer
Takashi Muratani Key Animation
Hiromasa Ogura Background Designer
Yoshikazu Fukutome Background Designer
Ayumi Kawai Background Designer
Yasuhiro Asagi Compositing Artist
Kozue Okada Music Producer
Keiko Ishizuka Compositing Artist
Natsuko Sato Compositing Artist
Tomohiko Ito Assistant Director
Yoji Takeshige Art Direction
Kazuo Oga Background Designer
Mamoru Hosoda Director, Story
Yoshio Obara Sound Recordist
Yoshiyuki Sadamoto Character Designer
Anri Jojo Art Designer
Kazutaka Ozaki Animation Director, Key Animation
Kaori Kobayashi Special Effects
Tomohisa Shimoyama Key Animation
Ryotaro Makihara Key Animation
Ken Ootsuka Key Animation
Kumiko Kawana Key Animation
Michio Fukuda Key Animation
Takafumi Hori Key Animation
Takaaki Hirayama Key Animation
Masako Sato Key Animation
Tadashi Matsuzaki Key Animation
Takashi Mukoda Key Animation
Yumi Ishii Background Designer
Shiho Sato Background Designer
Kazuyuki Hashimoto Background Designer
Yuji Ikeda Background Designer
Akane Iwakuma Background Designer
Izumi Muta Background Designer
Kenji Fujita Compositing Artist
Yuki Kawashita Compositing Artist
Masayuki Onoue Music Editor
Kang Myoung-joo Compositing Artist
Kanako Yamada Compositing Artist
Naoki Tate Key Animation
Hiroyuki Inage Thanks
Koji Shinomiya Thanks
Shougo Furuya Key Animation
Tadashi Sakazaki Key Animation
Junko Ina Background Designer
Yoichi Nishikawa Background Designer
Kuniko Iwatani Background Designer
Tadashi Abiru Key Animation
Seiko Yoshioka Background Designer
Ayami Aritake Background Designer
Kohei Tanada Compositing Artist
Hitomi Sudo Assistant Editor
Yukiya Imamura Compositing Artist
Shigeki Nemoto Compositing Artist
Mamiko Katakura Music Editor
Yuji Furuya Foley
Naoki Akahira Foley
Masayasu Arimatsu Other
Name Title
Nozomu Takahashi Producer
Takuya Ito Producer
Yuichiro Saito Producer
Takashi Watanabe Producer
Seiji Okuda Executive Producer
Organization Category Person
Popularity Metrics

Popularity History


Year Month Avg Max Min
2024 4 24 34 15
2024 5 26 34 18
2024 6 26 43 16
2024 7 29 55 15
2024 8 21 32 13
2024 9 14 24 10
2024 10 17 26 8
2024 11 18 46 10
2024 12 18 30 12
2025 1 19 30 12
2025 2 12 19 3
2025 3 5 13 1
2025 4 4 9 1
2025 5 3 10 2
2025 6 4 7 3
2025 7 3 4 1
2025 8 2 3 2
2025 9 4 5 2
2025 10 4 4 3

Trending Position


Year Month High Avg
2025 10 971 971

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Reviews

Geronimo1967
7.0

It’s really quite apposite to watch this film at a time when governments across the world are merrily acquiescing to the demands of global tech to facilitate the rampant advance of AI. This story quite cleverly illustrates just how easily a collection of “Will Hunting” types can be used to crack eve ... n the most complex (2,000 digit) numeric code and allow nefarious access to a global network which manages just about everything we do - from using our phones to firing a nuclear missile. It’s bright spark - but maybe just a touch inept - “Kenji” who has accepted a task that is definitely not what he was expecting from “Natsuki” and so finds himself at her grandmother’s ninetieth birthday luncheon posing as her beau. A bit of a nervous wreck, he is later presented with an online puzzle by “OZ”, the network in question and he manages to message back a solution. Next thing we all know, it’s been hacked by an increasingly violent AI that is bent on a quest for knowledge and power, and that will stop at nothing. When poor old “Kenji” is identified and gets the blame, only an unique sort of intervention from granny and a solid series of team efforts from her family and from his friends might enable them to thwart this menacing creation. The animation starts off with images that reminded me of one of those childhood kaleidoscopes that brought vibrant crystalline shapes together, before heading full pelt into a frequently quite pithily comedic look at family traditions, teenage hormones and menacing nasties threatening the entire fabric of the internet. You’ll possibly never see a more potent cinematic demonstration of just how dependent and inter-dependant we are on this network of cables and zeroes and ones for much, if not most, of modern life. Not just our social lives, but our actual lives too are controlled and once control of that falls into malevolent hands, well humanity risks being well and truly stuffed. The last half hour focuses a little more on dealing with that problem, and the quickly paced action animation is underpinned by a plausible degree of science too. In many ways, it’s almost a horror movie - especially if you think on it: first love or online demons?

Aug 06, 2025