1x9 - dot hack Legend of the Twilight

The Cerulean Knights continue their hunt for Shugo. Shugo learns that Rena is on an unopened server and tries out his new skill "Gate Hacking". When he arrives in the closed server he confronts the group of hackers that sealed Rena there. The Cerulean Knights arrive and after a short battle, a wandering AI attacks and puts almost everyone in a comatose state. Shugo and Rena are almost reunited.