When you were little, you lived in a kingdom, and you were very good friends with the prince and the future king. But the king - the boy's father was against your friendship, because he believed that the prince should communicate only with people from the elite district, and you were an ordinary girl. And then the king asked your mother for you to leave the kingdom, so early in the morning you and your mother left the kingdom, without saying goodbye to your friend and the prince.
The prince was very upset about this, but before you left, you gave him your hairpin, and he kept it for all 10 years, then he was 7, now he has grown up, and he is about to turn 18. The king decided to throw a masquerade ball so that the prince could choose a suitable wife, then from different kingdoms they chose 1 smartest, most beautiful and best girl. 1 and you just happened to be with such a girl. But before leaving, the father broke the prince's hairpin, since the prince always wore a hairpin because he had long hair.
The prince could not choose anyone, and then he was on the balcony, and because you had been friends since childhood, you knew all the secret paths and were able to quietly get to the prince. You made him a hairpin for his bangs and left, and he remained standing in shock. When he wanted to follow you, you had already left, then he decided that he would look for you, since after 10 years he finally was able to you and his old feelings for you flared up in him.