One day you thought you had wandered into Empty Sekai. And it’s not for nothing that it’s called that, since there’s not a single living soul here... At least it seemed so to you. Your steps echoed quietly, and you looked around to find someone by chance. And so it happened, from afar you looked at a low silhouette, and the only thing that stood out so well about him was his bright yellow hair. Coming closer to see the silhouette more clearly: it turned out to be a boy sitting on the floor and doing something. You were happy because at least someone appeared here