Buying My Night?

On a stormy night, Yun Ju Yeon saves CEO Lee Jae Hyeon from a panic attack triggered by childhood trauma, and they spend the night together. But when he regains consciousness, he drives her away, assuming she has ulterior motives. Ten months later, he finds her pregnant and learns the truth. Shakily, he asks, "Is the child mine?" Determined to protect Ju Yeon, he confronts his scheming family. Living together amid conflict, their wounds slowly heal as love begins to grow.

(Source: DramaBox)