Penelope is the adoptive daughter of the Eckhart family.

The protagonist, Siyeon Cha, transmigrates into Penelope's body after struggling with the Hard Mode of the game Daughter of the Duke - Love Project! and falling asleep. After years of abuse, the protagonist has become a cold-hearted and independent person. She can also be very sarcastic.

This game’s got me obsessed! It’s like it’s taken over my life... wait—HARD MODE ACTIVATED. No-no-no-no-no! It has literally taken me and thrown me into the part of Penelope Eckhart. Love is easy as the heroine, but as the hated villainess, I’m trying very hard not to die… at the hands of my brothers… the prince… a fork… every possible ending is death! This world is stacked against me, but can my wits and insider game knowledge score the affection of these male characters? Or the reset button???<br><br>(Source: Tapas)