.hack//G.U. Returner is a single-episode OVA offered to Japanese fans who completed all three .hack//G.U. Games, featuring characters from the .hack//G.U. Games and .hack//Roots. It can be thought of as the Unison of .hack Conglomerate.
The characters receive an email from Ovan requesting them to go to Δ Hidden Forbidden Festival where a mysterious summer festival is set up. There they encounter an AIDA Chim Chim who wishes to peacefully co-exist with the players of The World. It then transforms into the word "Returner", which Haseo assumes it to mean that Ovan will return to The World. At the end of the episode, Ovan is reunited with Aina.
These characters are all given speaking roles (in order of appearance):
- Piros the 3rd
- Azure Kite
- Azure Orca
- Silver Knight
- Melo Grunty
- Death Grunty
- Kite (Balloon)
- Subaru (Balloon)
In Japan, DVDs of Returner were shipped to fans who bought all three games, just as GIFT was. Returner is not yet available in America.
- Although Tabby appears in the games, she doesn't know Atoli, and thus mistakes her for Shino.