She Is Not a Fake Princess, She Is My Father's Only True Daughter.

I was the tyrant's favorite princess, but the barrage exposed me as a fake identity. The day the imperial concubine found her true princess was when I was thrown into the cold palace. In despair, the system was activated, confirming that I was not only my father's true princess, but also the only true princess who only had his father's blood. From then on, I firmly held the position of princess and no one dared to question me.