Haseo's entrance into The World is marked by a hostile attack – and a crushing defeat. His adventure appears to be over before it started until a mysterious stranger gives him new life.

His search for information about his mysterious savior leads to an invitation for Haseo to join Ovan’s guild.

Rumors being spread about Haseo lead to attacks against him. Invitations to join two separate guilds intrigue him, but an encounter with Shino will influence his choice.

Haseo embarks on a journey through the game on a quest to level up, Sakisaka grows suspicious, and Tabby meets an untimely end.

Haseo is suspected of acting as a spy, putting him at odds with the Twilight Bridgade. His actions after the falling out only serve to further implicate him.

Concerns over Sakisaka’s loyalty arise, The World experiences technical difficulties, and Haseo unveils a few new tricks.

Strange occurrences plague The World as Haseo wanders the Lost Grounds. Later, a group exploration leads to shocking new knowledge and a sudden disappearance!

The group stumbles upon a portal, Haseo shares an encounter with Ender, and more is learned about the virus cores.

While attempting to collect all the Virus Cores, the Twilight Brigade is attacked by adversaries – and relocated to a mysterious, unknown area.

Ovan wanders into a trap while searching for the Key of Twilight. Shino, in an attempt to secure Ovan’s release, makes a bold threat!

Gord gives serious thought to leaving The World for good, and the administrators take serious action against some online outlaws.

The Twilight Brigade is forcibly disbanded, Gord finally arrives at a decision regarding his involvement in The World, and Haseo makes a vow to Shino.

Tabby has some shocking news for Haseo, and Shino’s precious data beings to disappear.

Haseo is devastated about his inability to prevent Shino from falling into a comatose state. Tabby has plans for a new guild, but its lack of members is troubling.

Tabby encounters two players who are new to The World. Later, she learns the secrets to leveling up, and Haseo embarks on a quest for revenge.

Phyllo attempts to comfort Haseo, who continues to agonize over his comatose friend. A dangerous new quest – and the promise of newfound power – tempts Haseo.

Tabby’s been worried about Haseo since his departure to the Forest of Pain. She expresses her concern to Subaro, who is instructed by Pi to follow Haseo into the forest. Meanwhile, Yata and Pi prod Phyllo for information about his relationship with Ovan.

Tabby is still struggling with her inability to help Haseo in the Forest of Pain. In the forest, Haseo grows frustrated with the ever-growing amount of monsters he must fight before going deeper, but his quest for more power may be his downfall.

Tawaraya returns unde the moniker “Tohta” to discover a gang of money traders has been flooding the market, creating high inflation. Despite his quest for secrecy, Tohta can’t stand back and let the money traders fleece innocent players, and decides to intervene.

As Haseo’s search for information about Tri-Edge continues, his sanity begins to slip away, and in a murderous rage he kills several PKs. Yata and Pi are still on the hunt for Haseo’s factor. They send Subaro to retrieve it, but she can’t overcome Haseo’s manic strength.

A mysterious new player, Midori, has started a “hit-me-if-you-can” service. Haseo, still in the grips of manic power, enlists her services in order to discover Tri-Edge’s whereabouts. Meanwhile, Tohka encourages Tabby to start her own guild.

Tabby starts a new healing guild, but so far they haven’t had much success. Tohka points out that their levels are way to low to help anyone, and demands they go out and raise them. Haseo finally makes an appearance in town, and Phyllo warns him about the dangers of being single-minded.

Haseo, consumed by a violent mania, will stop at nothing to find Tri-Edge, even it if means slaughtering any Player Killer who steps in his way. But while on his murderous rampage he’s left behind a trail of PK enemies who band together to stop him.

After brutally slaughtering all the PKers, Haseo earns the nickname “The Terror of Death.” Still in the grips of insanity, Haseo refuses help or warnings from his old guild. But when Haseo finally encounters Tri-Edge, will he able to carry out his plan?

There’s been no sign of Haseo for several days now, and rumors swirl that he’s quit for good. In his absence, Tabby has a realization, and also discovers a new love interest! Meanwhile, Phyllo divulges something shocking to Tohta.

Haseo reappears after his hiatus only to receive devastating news about Phyllo. Tabby finally discovers the confidence to make her own decisions, and informs Haseo she has decided to become a nurse in order to save Shino. Now, Haseo is alone with only his memories to keep him company.

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.