.hack//G.U. Returner is a oVA anime that premiered in winter 2007.

About the production: the story comes from a video game, there is 1 episode of about 24 minutes and its current status is "finished".

Its main genres are adventure, drama, fantasy and sci-fi, with themes such as Virtual World.

On AniList, .hack//G.U. Returner has an average score of 63%, an average score, and appears on 4,065 users' lists.

The franchise continues in or follows from: .hack//G.U. Trilogy.

The characters from previous .hack//G.U. Games and .hack//Roots receive an email from Ovan. He is requesting them to go to Hidden Forbidden Festival where is set up a mysterious summer festival. There they find an AIDA Chim Chim who wishes to peacefully co-exist with the other players of The World. It then transforms into the word "Returner", so they assume it to mean that Ovan will return to The World. (Source: Anime News Network)

Official synopsis from AniList.