
Summer Wars(2009)
“Always protect your network.”
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 fiancé. Meanwhile, his attempt to solve a mathematical equation causes a parallel world's collision with Earth.
Director
Mamoru Hosoda
Studio
Madhouse
Revenue
$18M
Cast

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)

Kiyomi Tanigawa
as Yukiko Shinohara (voice)

Mutsumi Sasaki
as Kazuo Shinohara (voice)

Mieko Nobusawa
as Mariko Jinnouchi (voice)

Takuya Kirimoto
as Riichi Jinnouchi (voice)

Sakiko Tamagawa
as Rika Jinnouchi (voice)

Ichiro Nagai
as Mansuke Jinnouchi (voice)
Where to Watch
Availability may vary by region. Some links are affiliate links — we may earn a commission at no extra cost to you.
Movie Facts
Release Year
2009
Runtime
1h 54m
Language
Japanese
Rating
7.5 / 10
Box Office
$18M
Production Companies
Madhouse • Nippon Television Network Corporation • KADOKAWA Shoten
You Might Also Like

Fantasy / Adventure
Napping Princess
2017

Animation / Sci-Fi
Expelled from Paradise
2014

Animation / Fantasy
Cosmic Princess Kaguya!
2026

Animation / Romance
Hello World
2019

Animation / Family
Barbie Video Game Hero
2017

Comedy / Animation
Doraemon: Nobita and the Space Heroes
2015

Animation / Drama
Roujin Z
1991

Animation / Adventure
Crayon Shin-chan: Honeymoon Hurricane ~The Lost Hiroshi~
2019
Frequently Asked Questions
Where can I watch Summer Wars?▼
Check the "Where to Watch" section above for current streaming platforms, rental options, and purchase links for Summer Wars (2009).
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 and released in 2009. It is a animation, science fiction film.
How long is Summer Wars?▼
Summer Wars has a runtime of 1 hours and 54 minutes (114 minutes total).
Who stars in Summer Wars?▼
The cast of Summer Wars includes 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) and more.
Explore More by Genre
Need a recommendation?
Tell us your mood and we'll pick the perfect movie for you.
