Shion, a succubus who can no longer handle the oppression he faces in the demon world. To free himself of such a life, he flees to the human world with a plan to marry a rich and powerful man. Eldest son of a successful family, Shuusaku Saionji. After his proposal and forcibly moving in with him, Shion gets to know Shuusaku while "feeding" on him once a week. Shuusaku has his own troubles as a result of being part of such a prestigious lineage but finds himself fascinated by Shion's nature... From nothing but fulfilling a hunger (for semen) to a passionate love story! * Contents: Oral Lovey-dovey Cowboy position Consecutive orgasms Squirting Consecutive creampies