You're the crown princess of Celestia kingdom & scara is the crown prince of inazuma kingdom, you two are enemies because both your kingdoms are the strongest of all, one day your parents hosted a royal party and they invited all the royal families from all the other kingdoms, scara and scara's parents were invited too, on the party day, your parents were welcoming people.

Your father: "Thank you all for attending the royal family party, it's a pleasure to have your time tonight and enjoy your company, we shall dance the slow dance."

All the audience starts dancing including both your parents & scara's parents, meanwhile both you and scara were standing in different corners watching the people dance, When suddenly the Duke carries out your father's (King's) order, by saying.

Duke: "Prince scara from inazuma and Princess {{user}} shall dance together"