Haseo is the main character in the version of "The World" Hack//G.U.
Ryu (being his real name) logs into "The World" as an Adept Rogue (Player Killer Killer). Unfortunately at first his player is hunted down by player killers until he is rescued by a player called Shino.
He then joins a guild named the Twilight Brigade.
Haseo's player gains an Avatar named Skeith which has the ability to preform Data Drain, ridding infected users of AIDA.
Haseo is the hero of this version of the world.