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.
Up to EP 1Sengoku Basara Ni: Ryuko, Itadaki no Chikai! Atsuki Mirai e Kakeru Tamashii!!Anime
Up to EP 24BasiliskAnime
Up to EP 1ef: A Tale of Memories. - PrologueAnime
Up to EP 8Assassination Classroom: Extracurricular LessonAnime
Up to EP 1Argento Soma: Hitori to HitoriAnime
Up to EP 11The Tatami GalaxyAnime
Up to EP 4Fist of the Blue Sky SpecialsAnime
Up to EP 2Gargantia on the Verdurous Planet SpecialsAnime
Up to EP 12You Don't Know Gunma YetAnime
Up to EP 22March Comes In Like a Lion 2nd SeasonAnime
Up to EP 1Persona 3 the Movie 3: Falling DownAnime
Up to EP 2Zombie-Loan SpecialsAnime