At last, Kirito and the others have reached Central Arun, the largest city in Alfheim, located at the foot of the World Tree. But because the servers are scheduled to be closed soon for maintenance, Kirito and Lyfa log out temporarily, promising to see each other again the next day. Meanwhile, in the real world, Kazuto's younger sister, Sugaha, agonizes alone over her budding feelings for her elder brother. Deciding to test how real those feelings are, Sugaha asks Kazuto to allow her to join him when he visits Asuna in the hosptial.