Kikuoka explains to Asuna and Rinko that Kirito's brain was severely damaged from the attack and they are using the STL technology to restore it. He also reveals that the main focus of the Underworld experiment is to create a new, more advanced form of artificial intelligence. Despite the experiment having proven successful, they note that by establishing the Church of Axiom inside Underworld, the AIs have managed to completely eliminate all kind of transgressions, including murder, from their community, and that they needed someone with years of experience in VRMMORPGs like Kirito to interact with them to develop them further...