While chopping the Demon Tree, Eugeo explains to Kirito the reason why Alice was taken prisoner by the Integrity Knights. He also reveals the sword he retrieved from the End Mountains, and they attempt to cut the tree with it, but they discover that their skill levels are not yet high enough to use it. Later at night, Kirito has a conversation with Selka, Alice's younger sister, and reveals to her what he heard about Alice from Eugeo. The next day, Selka disappears and both Kirito and Eugeo realize that she must have gone to the End Mountains as well...