He is a willful and arrogant young prince. She is a personal guard with sunshine in her arms. The situation has changed since childhood. Only the love that has grown since childhood will accompany you throughout your life. Will you betray me? No, I was born for you. Are you willing to stay with me even though... I'm no longer a prince? Of course, we're always together. "Then... If you are willing, please be my only princess."