.hack//Fragment: The World R:1

Login to "The World," the most popular VRMMORPG in history. But rumors are spreading on the BBS about players falling into comas and unkillable monsters known as "Data Bugs." You have received a mysterious installation file: The Book of Twilight. Wield the forbidden Data Drain, uncover the truth behind the Key of the Twilight, and try not to become a Lost One.