Sword Art Online Light Novel Volume 10

Summary
After Kazuto is attacked by Johnny Black, an old player of SAO, and he is rushed to the hospital. He falls into a coma due to his injuries, and then mysteriously disappears from the hospital. Asuna tries to find his location with the help from her daughter Yui and Koujirou Rinko (the deceased Kayaba Akihiko's lover).

They discover that he is currently in the custody of Kikouka Seijirou and Higa Takeru, who is currently experimenting with soul translator. (the fourth generation full dive technology)

On the other hand, Kirito and Eugeo journey south to the town of Zakkaria in order to find the location of the abducted Alice.