Ryunosuke Kamiki
Kenji Koiso (voice)
Released
Summer Wars
“Always protect your network.”
12A · 6 Jul 2025 · 114 min · Japanese
AnimationScience Fiction
Troped
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TMDB
7.5 / 10 · 1,065 votes
The film
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.
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Official trailer
On screen
Cast & characters
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)
Behind the camera
Key crew
- Director
- Mamoru Hosoda
- Writing
- Satoko Okudera, Mamoru Hosoda
- Cinematography
- Yukihiro Masumoto
- Original music
- Akihiko Matsumoto
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