.hack//Quantum is a oVA anime that premiered in winter 2011, produced by Kinema Citrus.

About the production: the story comes from an original script, there are 3 episodes of about 26 minutes and its current status is "finished".

Its main genres are action, adventure, fantasy and sci-fi, with themes such as Virtual World, Video Games, Artificial Intelligence and Magic.

On AniList, .hack//Quantum has an average score of 68%, a good score, and appears on 7,962 users' lists.

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?

Official synopsis from AniList.