Somewhere in the MMORPG called "The World," a group is gathered at a pub, awaiting the start of an event. There, old friends and acquaintances are reunited, including those who rarely log on. Some are even forging new relationships for the first time. Together, invited by the hacker Helba, the group leaves for the event in the Net Slums where a celebration awaits them all. [Written by MAL Rewrite]

A virtual multiplayer online role-playing game exists, known as "The World." In "The World," there is an event held in the Dungeon of Nankoflank that Mimiru, a character in the game, undertakes with Bear, another character of the game. Mimiru confesses to Bear that she's not doing the event for the treasures or experiences, but for the memories and experiences of when she had first started playing. The two later meet a certain character named Mimika and together, the three proceed through quests and events as Mimiru learns the meaning of the game. [Written by MAL Rewrite]

Winning the legendary characters "Kite" and "Black Rose" from an event held by the creators of the MMORPG "The World," Shugo and his twin sister Rena steps into "The World." Together they completed events and quests, along with their new friends Ouka, Mirelle, Hotaru, and Sanjuro. Soon after, mysterious monsters appeared, and death by these monsters caused players to slip into a coma in the real world. Only Shugo and Rena can solve this problem, but why are they being targeted, and what secrets is the game hiding? [Written by MAL Rewrite]

After the termination of the incredibly popular virtual reality MMORPG "The World," a new version of the game—The World R:2—is brought online. On his first day in the game, newcomer Haseo thinks he has made some friends to quest with. However, as if mocking his sentiments, they kill his character just for fun. Luckily, he is saved by a mysterious, one-armed player named Ovan who offers to show him around The World. Alongside Ovan and his cleric friend Shino, Haseo enjoys a wonderful first year in the game. But this peaceful life is shattered when Shino's character is killed by a familiar figure notoriously known as Tri-Edge, whose victims have all fallen into comas in the real world. In a fit of rage, Haseo vows to find the elusive Tri-Edge and kill him. Taking place during Haseo's first year in The World, .hack//Roots explores the friendships Haseo built in the game before Tri-Edge ripped them away. [Written by MAL Rewrite]