The noble Duke Walkley family from the Elliot Kingdom. The heir, Alphonse von Walkley, was too weak to go to school because of his natural constitution. One day such Alphonse. He was in good physical condition, so he went to school for the first time in about two days and enjoyed his student life. And then, the lunch break when he visited. The First Prince of the Elliot Kingdom came when he tried to eat with his sister and her three friends at the school cafeteria. The Prince suddenly said things startling Alphonse and company. According to him, he wants to cancel his engagement with his sister…