Fake Rich Heir, Drop the Act: Reborn, I'm the Real Heiress

In my previous life, a rich fake heiress and her scumbag boyfriend pushed me into a river and left me to die. Only then did I learn that I was the Su family's real heiress, and that he was a pretentious gold-digger! Reborn at the proposal during my twentieth birthday party, I play along to gather evidence, then turn around and expose the scumbag completely, proving the fake heiress's true identity! I put those awful relatives in their place, take charge of the Su family's business, and team up with a top tycoon to crush scumbags and build our careers! Fake rich family, quit pretending. Fake white lotus, stop acting. This time, I'll take back everything and become a true queen of high society!