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?
Status: Finished Airing
Aired: Jan 28, 2011 to Apr 7, 2011
Producers: Bandai Visual, FUNimation Entertainment, Kinema Citrus, flying DOG, Showgate, BIGLOBE
Duration: 26 min. per episode
Rating: PG-13 - Teens 13 or older