[Machine Translation] Kirito logs into the alleged VRMMO "Alvheim Online" to save Asuna, who has yet to return from SAO. The next generation flight game, "ALO", has attracted many players with its high specs that are no less than those of "SAO", including the concept of "magic", the action elements where the player's reaction power and judgment determine victory or defeat, and the "flight system" where the player becomes a "fairy" and flies around in the sky. Kirito, now a "fairy" spriggan, is now heading for the "World Tree", the final goal of all players, where Asuna is imprisoned...! Along the way, Kirito finds himself in a desperate situation due to the schemes of the Salamander players, but with the help of Reefa, a Sylph girl, and Yui, a navigating pixie, he somehow manages to survive. Finally, Kirito reaches the base of the World Tree. But then, Reefa and Kirito discover each other's "secret"...