"Young lady, please refuse if you don't like it."

The condition for the daughter of a yakuza family, Ayame, to leave her parents' house is that she must live with her bodyguard, Ritsu. He may be lacking tact, but sincerely takes care of her. One day, Ayame is nearly attact, but Ritsu comes to her rescue. He is still anxious at night though, and asks him to hold her tight, but what is this big and hard thing... ?