Summer Wars
サマーウォーズ
“Always protect your network.”
Synopsis
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.
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
Official Trailer [Subtitled]Official
Type: Trailer • Published 2025-06-27
Top Cast
Explore Star Directory →
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)
Release History & Theatrical Window
Hong Kong Asian Film Festival
Festival / Special Debut
July 27, 2025
Wide Cinema Exhibition
February 12, 2011
Physical Home Media
Financials & Box Office Performance
Production Budget
Undisclosed
Filming & production cost
Worldwide Gross
$18.4M
Total global ticket sales
Key Information & Fast Facts
- Director
- Mamoru Hosoda
- Screenplay & Story
- Satoko Okudera
- Original Score
- Akihiko Matsumoto
- Original Title
- サマーウォーズ
- Country of Origin
- Japan
- Spoken Languages
- Japanese
- Runtime
- 1h 54m
- Worldwide Gross
- $18.4M
- Production Studios
- Madhouse, Nippon Television Network Corporation, KADOKAWA Shoten, D.N. Dream Partners, Warner Bros. Japan, Yomiuri Telecasting Corporation, VAP, Studio Chizu
Creative Leadership & Key Crew
Mamoru Hosoda
Satoko Okudera, Mamoru Hosoda
Akihiko Matsumoto
Yukihiro Masumoto
Shigeru Nishiyama
Nozomu Takahashi, Takuya Ito, Yuichiro Saito, Seiji Okuda, Takashi Watanabe
Department Leadership Roster
Nozomu Takahashi
Producer
Takuya Ito
Producer
Mamoru Hosoda
Director
Yuichiro Saito
Producer
Akihiko Matsumoto
Original Music Composer
Shigeru Nishiyama
Editor
Satoko Okudera
Screenplay
Yukihiro Masumoto
Director of Photography
Takashi Watanabe
Producer
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
PG: Parental Guidance Suggested — May contain mild violence or suggestive material.
International Certification Matrix
Parental Guidance — Recommended for mature viewers.
FSK 12 — Restricted to viewers aged 12 and older.
12 Accompanied — Under 12s must be accompanied by an adult.
Parental Guidance Suggested — May contain mild violence or suggestive material.
Production Stills & Gallery
Official cinematic photography and background stills for Summer Wars.
Featured In Curated Collections
Editorial lists, community rankings, and cinematic collections featuring Summer Wars.
Letterboxd's Top 250 Animated Films
Letterboxd's official Top 250 Animated Feature Films, ranked by average member rating. Letterboxd 官方 Top 250 最佳动画长片榜单： 根据平台用户的平均评分进行排序。入选影片必须为动画长片，且排除了无法独立观看的剧集衍生剧场版。 *(Updated via Automated ETL Pipeline: 2026-10-18 07:36:20 UTC+8)*
anime wanted
Topher's Vault: Anime & Japanese Animation — Movies
Topher's Vault Category 18: Anime & Japanese Animation — Movies only. Curated by Navi for Topher's profile.
Watchlist - Animation
Abstrusest 2
To Watch
Similar Titles to Summer Wars
Movies sharing stylistic DNA, tone, and thematic storytelling
7.4Anime
5.8Anime
6.0Anime
7.7Anime
Anime
6.7
6.5Anime
6.9
4.9
7.9Anime
6.0Anime
6.9Anime
5.8Anime
6.2Anime
6.7Anime
Anime
6.3
7.1Anime
7.0Anime
5.9Anime
More Like Summer Wars
Recommended titles matching themes, cast, and genres.
Frequently Asked Questions About Summer Wars
Quick factual answers about cast, synopsis, director, box office, and release information.
What is Summer Wars about?
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.
Who directed Summer Wars?
Summer Wars was directed by Mamoru Hosoda.
Who stars in Summer Wars?
The principal cast of Summer Wars includes Ryunosuke Kamiki, Hitomi Miyauchi, Mitsuki Tanimura, Sumiko Fuji, Ayumu Saito.
When was Summer Wars released and how long is it?
Summer Wars was released in 2009 with a total runtime of 1h 54m.
How much did Summer Wars make at the box office?
Summer Wars grossed $18.4M in worldwide ticket sales.
Who composed the musical score for Summer Wars?
The original motion picture soundtrack for Summer Wars was composed by Akihiko Matsumoto.
What is the age rating and content advisory for Summer Wars?
Summer Wars holds official age classifications: AU: PG (Parental Guidance — Recommended for mature viewers.); DE: 12 (FSK 12 — Restricted to viewers aged 12 and older.); GB: 12A (12 Accompanied — Under 12s must be accompanied by an adult.); US: PG (Parental Guidance Suggested — May contain mild violence or suggestive material.).