Urara, a member of the demon tribe, has a fateful encounter with Momohiko, a descendant of Momotaro, and they decide to get married!However, while Urara dreams of a lovey-dovey newlywed life, Momohiko says he won't sleep with Urara until he becomes the strongest.So, all she can do is use all her might to seduce him and make him sleep with her...!?