Absolute Anime

Orca has played "The World" ever since it was called Fragment, together with Balmung of the Azure Sky. They wanted to kill an event monster called the One Sin. Orca dealt the killing blow to it. The prize was a pair of wings. But Orca, not wanting a crowd drawn to him, gave them to Balmung who used them to overwrite his character data, which is why Balmung has wings.

Prior to the games, Balmung and Orca were looking into data bugs when they entered a a strange alien room left over from Fragment, when Orca said Morganna Mode Gone, and realized it was Morganna causing the problems in "The World" due to her malfunctioning.

Later, at the beginning of .Hack//Infection, at Delta Bursting passed over Aqua field, Orca and his classmate Kite, encountered Aura and Skeith in the dungeon but headed down to B2. After they looted the statue, Aura appeared and gave Orca a book. Then Skeith appeared, and Orca tried to hit Skeith, but failed, Skeith then data drained Orca, causing the player to fall into a coma.