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.
Stream
Buy
Rent
US data via JustWatch
as Kenji Koiso (voice)
as Natsuki Shinohara (voice)
as Kazuma Ikezawa (voice)
as Sakae Jinnouchi (voice)
as Wabisuke Jinnouchi (voice)
as Takashi Sakuma (voice)
as Yukiko Shinohara (voice)
as Kazuo Shinohara (voice)
as Mariko Jinnouchi (voice)
as Riichi Jinnouchi (voice)
CinemaSerf
Aug 6, 2025
It’s really quite apposite to watch this film at a time when governments across the world are merrily acquiescing to the demands of global tech to facilitate the rampant advance of AI. This story quite cleverly illustrates just how easily a collection of “Will Hunting” types can be used to crack even the most complex (2,000 digit) numeric code and …
