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.
Satsuki Amamiya was feeling down due to the graduation of the high school Photography Club’s president. However, her best friend and fellow member An Kiriyama encourages Satsuki to dedicate herself to the newly merged Cinephoto Club. Join Satsuki and An as they set out to track down a missing camera, meet new faces, and capture stunning photos and videos along the way.
