He Belongs to My Sister

On the day of his sister’s wedding, Seo-jun thought he was gaining a brother-in-law. He never imagined he’d be falling for him instead. When Min-ho, a quiet and devoted man, agrees to an arranged marriage with Seo-jun’s older sister to save his family’s reputation, he never expected to be drawn to someone else in the family — especially her younger brother. Seo-jun has always lived in his sister’s shadow, the golden child of their family. But when he meets Min-ho, something in him awakens. Something fragile, confusing… and dangerous. As stolen glances turn into lingering touches, and secrets bloom behind flower-laced curtains, Seo-jun finds himself caught between duty, desire, and heartbreak. In a world where love has rules — and breaking them comes at a price — can two souls trapped by circumstance find the courage to choose each other? Or will their love remain a beautiful, impossible whisper… behind wedding vows not meant for them?