AI buster follows the adventures of Albireo as he plays a beta version of what will soon be known as "The World." In his journeys, Albireo encounters Lycoris, a failed version of Aura and makes a connection that may turn out to be unbreakable.

In order for Akira to save her younger brother, who suddenly lost consciousness in the middle of playing in The World, she enters The World as the swords-woman Black Rose. There Black Rose squares off against the double-knife fighter, Kite.

Akira - also known as Black Rose - keeps fighting to save her younger brother's consciousness from "The World." But as she becomes immersed in the online game, Black Rose is beset by even further problems in the real world!

Akira once again enters the online game The World in order to save her younger brother, who has lapsed into a coma. With the virus infection now spreading to protected areas, she joins forces with Kite to unravel the mystery of the Epitaph of the Twilight and the Cursed Wave. But the two of them couldn't battle it out alone! Should they make a deal with Balmung? And should Akira reveal the secret of her brother's condition?

The World is further corrupted as the game expands into our reality. With Aura and her bracelet, BlackRose (aka Akira) discovers the answers to some important questions. They help shed light on Corbenik, the virus at the source of all the trouble. Will Akira, along with the aid of her comrades in The World, be able to save her comatose brother in time?

"The World" is a massively multiplayer online game played by more than twelve million people across the globe. Within this virtual world Haseo, a PPK (Player Killer Killer), continues an endless fight. However, on finally meeting with his sole lead, a PK called "Tri-Edge," Haseo is dropped back to Level 1 by a mysterious power! Can Haseo save Shino now that he has lost all of his abilities?

In the seven years since the events of the original series, Altimit OS been replaced by Altimit Mine OS and The World has become The World R:2, a dangerous game overrun by player killers and where lawlessness abounds. Follow Haseo as he chases Tri-Edge and gets involved with Project G.U. and mysterious SIDA who plague The World R:2!

Haseo's Avatar, Skeith, awakens to combat Endrance's Macha in fierce battle. As more information surfaces concerning the AIDA (Artifically Intelligent Data Anomoly) menace and the power of the Epitaphs, Haseo finds himself in a battle against time to stop the rogue player killer Tri-Edge before any more of the people he knows become Lost Ones.

With the members of G.U. now dropping like flies, Haseo receives a message that the enigmatic Tri-Edge has appeared once more at the cathedral. There await all the answers to Shino, Tri-Edge, and the current state of The World itself!

After saving Shino from AIDA and Ovan, Haseo decides he's done with The World... until he receives a letter from Aina, Ovan's little sister and the first of the Lost Ones. Left with no choice, Haseo must embark on one final mission to save those thought lost forever. With a new Head of G.U. on the offensive, Haseo must turn to unexpected allies to complete this daring mission that will change the face of The World forever!

It has been four years since the incident that has come to be known as the Twilight. Many of those who witnessed it no longer come to "The World." It is a different place. A safer place. Shugo and his twin sister Rena are two of the newest players to join "The World." And they've won a very special prize in a contest - they get to use the character likenesses of the legendary Kite and Black Rose.

Shugo and his twin sister Rena are two of the newest players to join "The World." And they've won a very special prize in a contest; they get to use the character likenesses of the legendary Kite and BlackRose. Such a prize is very rare indeed, and it makes them the center of a lot of attention. The pair will encounter friends and allies, but it soon becomes very clear that they are not ordinary players...