Give Me Your Body, Grand Duke!

She possessed a character in a 19+ obscene novel called The Reason This Saint Has Become Corrupt It was a novel in which the female protagonist, one of the saints protecting the empire, seduces all the royal family members to share their holy powers and creates a reverse harem. She became one of the saints who died because she could not receive the holy powers. She possessed a body that couldn’t even make it to the end of the first arc. So in order to survive, she decided to target the Northern Grand Duke. He was the only one among the royal family members who had not been seduced by the female protagonist. She was worried whether she could actually receive the holy powers from him, but ...