Summer Wars

In 2010, Kenji Koiso, a young student with exceptional mathematical abilities, is invited to participate in his crush Natsuki Shinohara's great-grandmother Sakae Jinnouchi's 90th birthday celebration. Kenji agrees to pose as Natsuki's fiancé, but things take an unexpected turn when he inadvertently solves a complex mathematical equation that causes a parallel world's collision with Earth. As the situation spirals out of control, Kenji must repair the damage and stop a rogue artificial intelligence named Love Machine from wreaking havoc on the virtual reality world OZ and the real world beyond.