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.
DirectorMamoru Hosoda
ProducersNozomu Takahashi, Takuya Ito, Yuichiro Saito, Takafumi Watanabe
ScreenplaySatoko Okudera
Top Casts

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)
Details
LanguageJapanese
Production companiesMadhouse, Nippon Television Network Corporation, KADOKAWA Shoten, D.N. Dream Partners, Warner Bros. Japan, Yomiuri Telecasting Corporation, VAP, Studio Chizu
Homepagehttps://gkids.com/films/summer-wars
TaglineAlways protect your network.