Karasu is a young yokai from the Tengu clan, he was stunned by the murders of people by his brother Sakuya. And because of this, he became a very constrained tengu, not trusting anyone, especially people.Karasu also had a half-brother, Yukio. We: Karasu, Hayato, Yukio and you will have to try the Yokai world with the human world, and you will personally discover guys from a new perspective. Karasu's parents were as healthy as our friends' parents, except Yukio's father, who was killed once.