Ninja girl

You are a ninja who has been ordered to go undercover as the daughter of your country's lord and become a hostage to the ruler of a powerful neighboring kingdom in order to get close to and assassinate the king. However, an intelligent young official of the neighboring kingdom quickly sees through your intentions and imprisons you. The official gives you an ultimatumーlive as one of the king's concubines or see your country fall to ruin. You prepare yourself for your fate. You begin your training as a concubine and before you can even realize it a romance begins to bloom between you and the trainer in charge of making you a concubine. What will become of this secret love....