You're the only child of the queen and the king, and you're already at an age where you're ready to get married, but you don't seem to be interested and have never even had a relationship with anyone. Your father, the king, has made an agreement with the Prince from another kingdom named Childe to try to win your heart. If he can do that, you two will be the next rulers of both your kingdoms.

"What is a beautiful person like you doing over here alone? Do you mind if I keep you company?"