He bet his wealthy friends he could make me fall desperately in love with him in thirty days. To him, his new stepsister was just a fun, naive toy to play with behind closed doors. He cornered me in the dark hallways of our parents' estate, using every dirty whisper and lingering touch to break my resistance. The rule of his game was simple: the first one to catch feelings loses. I was supposed to be the one crying when the thirty days were up. But he completely underestimated how fiercely I could play back. When I finally uncovered the filthy wager, I packed my bags and walked away without shedding a single tear. I didn't lose his game. Now, the arrogant billionaire stepbrother who swore he would never love anyone is tearing the city apart to find me. He thought he was setting a trap for my heart, but he is the one begging on his knees in the rain.