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.

• DirectorMamoru Hosoda
• Release1 August 2009
• Genre
  Animation / Science Fiction
• Duration1h 54m
• Budget?
• Revenue$18,434,328
• Rate
  

  7.5
  993 reviews
• Productions

  Madhouse, Nippon Television Network Corporation, KADOKAWA Shoten, D.N. Dream Partners, Warner Bros. Japan, Yomiuri Telecasting Corporation, VAP, Studio Chizu