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: 2009
Rating: 7.5
Genre: Animation, Science Fiction
Duration: 114 min
Country: Japan
Production: Madhouse, Nippon Television Network Corporation, KADOKAWA Shoten, D.N. Dream Partners, Warner Bros. Japan, Yomiuri Telecasting Corporation, VAP, Studio Chizu
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)