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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Verdict: Unknown
> Mamoru Hosoda (Director)
> Yukihiro Masumoto (Director of Photography)
> Hiroyuki Aoyama (Animation Director)
> Shigeru Fujita (Animation Director)
> Kunihiko Hamada (Animation Director)
> Kazutaka Ozaki (Animation Director)
> Tatsuzo Nishida (Animation Director)
> Tomohiko Ito (Assistant Director)
> Satoko Okudera (Screenplay)
> Mamoru Hosoda (Original Story)