.hack follows several young players as they navigate the vast, mysterious MMORPG known as “The World” – a place, it turns out, that is sometimes impossible to leave.

.hack//Liminality is an OVA series directly related to the .hack video game series for the PlayStation 2, with the perspective of Liminality focused on the real world as opposed to the games' MMORPG The World. Liminality was separated into four volumes; each volume was released with its corresponding game. The initial episode is 45 minutes long, while subsequent episodes are 30 minutes long. The video series was directed by Koichi Mashimo, written by Kazunori Itō with music by Yuki Kajiura. …

The story of two brainwashed assassins, Ein and Zwei, who struggle to regain their memories as they work for the Inferno crime syndicate.