Film opened in Japan in July 2009

Studio Chizu announced on Thursday that Mamoru Hosoda 's Summer Wars anime film will have 4DX screenings in Japan starting on January 17. The screening is celebrating the film's 10th anniversary.

The film centers on timid eleventh-grader and math genius Kenji Koiso, who is asked by older student and secret crush Natsuki to come with her to her family's Nagano home for a summer job. Natsuki's family, the Jinnouchi clan, dates back to the Muromachi era, and they've all come together to celebrate the 90th birthday of the spunky matriarch of the family, Sakae. That's when Kenji discovers his “summer job” is to pretend to be Natsuki's fiancé and dance with her at the birthday celebration. As Kenji attempts to keep up with Natsuki's act around her family, he receives a strange math problem on his cell phone which, being a math genius, he can't resist solving. As it turns out, the solution to the mysterious equation causes a hijacking of the social networking site through which most of the world's social and business traffic flows.

The original movie opened in Japan in July 2009, and Funimation released it in North America.