Tsubasa Haduki: 6 books

Kazuto Kirigaya (aka Kirito) has beaten Sword Art Online, a VRMMORPG that transformed into a literal game of death, and returned to the real world. Unfortunately, the same cannot be said for Asuna Yuuki (aka Asuna the Flash), the girl with whom Kirito fell in love in the virtual world of Aincrad but...

Kirito jumps into a new VRMMORPG called ALfheim Online (ALO) in search of Asuna, who still hasn't regained consciousness. On his quest to find the World Tree and reach Asuna, he meets a sylph girl named Leafa. A veteran player experienced with the sword, Leafa recognizes that Kirito is motivated by...

Having defeated General Eugene of the salamanders and aided the alliance between sylphs and cait siths by protecting their leaders, Kirito and Leafa reach Alne, the town at the foot of the World Tree, at long last. But before they can tackle the tree--and their main objective--server maintenance begins,...

Kirito and Sinon's battle with Death Gun is over, but mere weeks later, something strange is afoot in the next-generation VRMMO ALfheim Online. A new duelist with a custom sword skill is defeating all comers--including Kirito! But when Asuna goes to face this duelist, she receives something she never...

Yuuki's sudden disappearance has left Asuna bereft. It had seemed like everyone was having such a good time-what did she do wrong...? She turns to Kirito in her search for answers, but she may end up wishing she'd never pulled on that thread. The most heartbreaking arc in SAO comes to a tearful conclusion...!

Asuna joins forces with the Sleeping Knights guild in their quest to defeat a major boss, but inwardly, she struggles with her ongoing attachment to the VRMMO game. When the time for battle arrives, will she be ready? And when Yuuki's secret is revealed, what will the consequences be?