One day protagonists father tells him that he is actually from a royal family and to be able to claim his right to the throne he must pick his future princess before he graduates.
He proposes five girls from his class but none accepts him outright. But slowly they all begin to get close to him, and when they find out about each other they even get more aggressive.
Suddenly he finds himself living together with five girls. Everyday is a battle to win him over. Now he must chose one of them to be his future wife. Who will receive the princess card and achieve her dreams?