Surviving as an Illegitimate Princess

Dont look down on me just because Im young Even though I look like this Im on my 10th life
Im an illegitimate princess whose life was cut short after being mistaken as kin of an enemy country
Later I discovered the identity of my biological father in my 9th tragic regression
It was Faeon a war hero who defeated the demon king and the strongest holy knight in the continent
He had a forbidden relationship with the princess had me and then deserted me
In order to survive the harsh royal palace
Ive decided to use and then abandon this impudent father
I will become the strongest as fast as I can and escape from this disgusting country
And so while I was building my strength I happened to meet the demon kings son Leo
He wasnt arrogant like his father but he was pitifully living in captivity So I took care of him in secret
Asha you cannot get engaged to anyone
Huh Why
Because Ill take responsibility for you forever
What
We spent the night together
What is this prince saying
A father and holy knight who had a forbidden love
Along with an enemy prince who is trying to have a forbidden love
With them can the unfortunate princess change her fate