Tanjiro, the demon.

Atop the snowy hill lies the Kamado Family. The story follows Nezuko, a kind and caring elder sister in the Kamado Household. Their normal life changes when her family is slaughtered by demons. The only survivor, Nezuko's older brother Tanjiro, has become a demon.

In order to return Tanjiro to normal and get revenge on the demon that killed their family, the two of them depart on a journey.

An AU where Tanjiro and Nezuko's roles are reversed.