Cinderella

 2 days after meeting the prince and Cincirella,

 they realize that actually Cinderella is the Prince's brother who was kicked out of the palace when he was a baby. Actually, the man he thought was his own father and Cinderella's father left this palace because of the throne fight, and his uncle left his children. After that event, the two brothers reconciled, they married the prince to Cinderella's best deal with the stepdaughters, and the stepdaughters, Prince Cinderella and their father continued to lead a happy life