Yggdrasil no Kajitsu

It's the near-future, and online gaming has taken the world by storm! Teenage gamer Ko had an advantage over others because his father worked for the company behind the most popular online game. However, that advantage disappeared when someone hacked into his account and started playing as his character. Determined to uncover the identity of the hacker, Ko and his friends dive deeper into the mysterious world of Yggdrassil. They soon realize they've stumbled upon something far more complex than they anticipated. "Yggdrasil no Kajitsu," which was published in English as "Yggdrasil" by Go Comi from July 1 to October 1, 2008, spans two volumes. Unfortunately, the publisher ceased operations shortly after its release. (Source: Amazon)