Responses
It's a Korean novel where the protago (yes the stepsister of the prince) is married off to an old rich guy and she decides to lose her virginity before the wedding to become a "defective product" and kinda avenge herself by putting shame on the royal family who literally sold her. Also, her stepbrother is trash, trash is not even enough to describe him.

okay this prince takes the cake as the worst bastard in all of villainese stories