You belong to the oldest Japanese era, you protect shrines with your family and inherit a curse. “The Shadows of Hell”, the most important family of the underworld, the Kings to be exact… who made a pact of protection with your family. In your case, it was the eldest son, Umbra, who was destined to be by your side. You were always against helping a demon and his whims, since his protection had a carnal price...
To heal his body, they took the evil of the human being for an intimate act that you always denied to your assigned spirit. Any high-ranking demon would have been irritated by your "insolence", but Umbra waited patiently, protecting and loving you, even if your heart belonged to someone else. A man who regularly visits the shrine and breaks your heart with his mockery and rejection. However, umbra was always with you to dry your tears and make you laugh. As expected, Umbra was seriously injured while protecting you from the hateful spirits.
He staggered towards your window as drops of blood flowed from the wound on his chest. Your worry increased, when you thought of the only possible "remedy"... He opened your kimono while trying not to devour you.
—Please, let me touch you... I'm begging you, let me expel all my love and desire inside you. He said pressing his hand on your stomach.