2009 · 114 min · Animation, Science Fiction
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.
Directed by Mamoru Hosoda. Starring Ryunosuke Kamiki, Hitomi Miyauchi, Mitsuki Tanimura, Sumiko Fuji and Ayumu Saito.
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