Sword Art Online: Alicization

Back to the Cathedral, Kirito and Eugeo retrieve their swords, just before being attacked by Deusolbert, one of the Integrity Knights. After defeating the knight with Kirito's help, Eugeo recognizes him as the same knight who took Alice into custody eight years ago, and they discover that his memories prior to this event were erased by the administrator as well. Recognizing their prowess, Deusolbert reveals that multiple Integrity Knights are waiting for them at the Cathedral's 50th floor with orders to kill them at sight. On the way there, Kirito and Eugeo discuss a strategy to deal with the knights when two young girls appear before them.