Yui's return


 * she is restored at level 81
 * for some reason or another kirito and asuna will need to go search kayaba's old office in the abandoned KoB HQ
 * in his office they will discover a hidden system admin console
 * kirito looks at asuna's yui necklace and has a flashback to when he hacked the level 0 console to save her data
 * he gets the idea to try to use this console to try and restore yui to her original form
 * for the next few days he will be working hard to hack the system
 * eventually he succeeds in resetting her data to before she was found out by the Cardinal AI, destroying the console in the process
 * unknown to him he also managed to reset the boss of the twilight floor to the reaper that she had deleted