Summer Wars 2009
A young genius in mathematics Kenji agrees to Natsuki's unexpected offer to go to her grandmother for a jubilee. Kenji agrees without thinking. That same night, a genius receives a message with an encrypted code. With the ease of unraveling the code, Kenji sends a reply message, thereby opening a vicious stranger the way to virtual reality, with which you can control not only the game, but the real world.