Finding your next obsession
Finding your next obsession

Always protect your network.
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.
LUXEN Decision Guide
A more imaginative choice for viewers who want a story built around a different world, premise, or set of possibilities.
Best fit
Who it is for
Best suited to viewers who enjoy ideas, world-building, or stories that move beyond everyday reality.
Commitment
Standard sit-down · 1h 54m
Use the runtime as a quick check against how much time you have tonight.
Start here
Read the synopsis, then check the trailer.
Read the synopsis, then check the trailer, then use the animation and science fiction cues to decide whether the tone fits.
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Cast
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