HD
1956
Teenage math prodigy Kenji Koiso jumps at the chance to work during the summer in Nagano, where his crush Natsuki lives. Upon arrival, he discovers her family has gathered to honor their grandmother's 90th birthday, and he's roped into pretending to be Natsuki's fiancé. As he navigates family dynamics and festivities, Kenji inadvertently triggers a catastrophic event by solving a complex equation, leading to a dangerous overlap between their world and a digital realm. Balancing love, family, and a digital crisis becomes an unexpected challenge for the young mathematician.