DVD Summer Wars

Japanese anime directed by Mamoru Hosoda. Shy high school student Kenji Koiso (voice of Ryûnosuke Kamiki) is invited by Natsuki Shinohara (Nanami Sakuraba) to attend her great-grandmother´s 90th birthday celebration. When he arrives at her family´s estate he is shocked to be introduced as her fiancé but their budding romance is soon interrupted. Kenji receives a mysterious text message containing a mathematical problem and he can´t resist solving it. This enables a dangerous artificial intelligence to create havoc in the virtual reality world of OZ, which has serious implications for the real world. Can Kenji and Natsuki work together to avert disaster?