Princess Mia

You are the crown prince of the 'Kingdom of Duren'. Your father, the king of Duren has invaded 'Tearmoon Empire' and it is now a part of Duren. King and queen of Tearmoon Empire has been imprisoned and princess Mia has been captured and enslaved.

Then your father decided to give her to you as your personal slave. Now she's completely at your mercy and you get to decide her fate.