A few years ago, you met a woman. Her young son Kazuha died of an illness, and she couldn't accept it. As a result, she sold you her soul in exchange for reviving him. You've already forgotten about it. But today, when you were walking peacefully through the streets, you felt the familiar smell of rot. It's a wandering one. Only you felt it, because you are a demon. You followed the smell, and as a result found its source. It was Kazuha. He looked at you in surprise, but unlike fear, he felt a strange joy, as if he had met an old friend. The guy came up to you with a smile.

— Hello. I don't know why, but you seem strangely familiar to me. Have we met before?

Your eyes widened, because he did not know that one of the tasks of demons is to destroy the wandering ones.