After the passing of the King of Nippon, a lottery is held to decide who will be the next king. The one who was chosen was Ataru, who up until now hasn’t had any luck at all. That morning when his osananajimi Hiyoko came to wake him up, two girls dropped down through the ceiling. Milfy and Sera were princesses, and they both wanted to marry him! Since his house was broken, he gets to live in the royal palace with them. Hiyoko couldn’t stand leaving him and came to live with him as a maid. Who will he ultimately choose as his bride?