捨てた男は鳳凰でした~転生始祖、元カレを再攻略中~

Reborn as a bullied heiress, a legendary master vows revenge. She crushes her enemies while tangling with a devoted billionaire. But as HIS mask slips, a shocking truth emerges: he is the supreme lord she used and dumped 5 years ago! Now, she won't just conquer the empire—she's going to claim her man, too!