.hack//Quantum
Japanese title: .hack//Quantum
Type: OVA
Episodes: 3
Source: Original
Genres: Action, Adventure, Fantasy
Studios: Kinema Citrus
Producers: Bandai Visual, flying DOG, Showgate, BIGLOBE
Duration: 26 min per ep
Rating: PG-13 - Teens 13 or older

Tobias, Mary, and Sakuya challenge the impregnable "The One Sin", but they lose their way in the maze and unintentionally trap other guild members. A mysterious cat is watching their blunder. Is it another player character or NPC?