He, a genius and suave, is a genius prince that the demon clan has not seen in a century, and is given the task of wiping out the exorcist family; she is naturally arrogant and cute, and is a genius exorcist that the exorcist family has not seen in a century, and is given the important task of destroying the demon clan. Intricate love, joys and sorrows, love and hatred, where should they go when they are young. .