.Hack//Sign is the first of the .hack series.
Tuskasa is playing a game called "The World" when Tuskasa finds out his consciousness is inside the game he starts to doubt that he really exists but finds confidence in Lady Subaru a young girl who loves "The World" will he find out the long lost secret of the game? or will he be lost forever?

this is a really great TV show if I'm correct there are 28 episodes....
Tuskasa and Subaru make a great couple....until the end though.
enjoy^^