Sword Art Online III Lost Song PS Vita is the sequel to Sword Art Online II: Hollow fragment. Taking place in the brand new world of ALFheim, take to the air with its aerial combat system, explore a new original story set against all new environments, with new quests and characters based on this incredible popular anime series. Take flight alongside Kirito, Asuna, Leafa and Sinon as they set out on their next grand adventure!