How did i end up with my sister's ex-boyfriend

How Did It End Up With My Sister’s Ex-Boyfriend When his older sister is left emotionally shattered after a painful breakup, Jae-min makes a reckless decision—he’ll get revenge on the man who ruined her. That man is Kang Jihan: twenty-five, wealthy, polished, charming, and infuriatingly untouchable. To everyone else, Jihan is the perfect heir with a perfect smile. But to Jae-min, he’s the reason his sister can no longer smile the same way. So Jae-min comes up with a plan. He’ll get close to Jihan. Make him fall in love. Make him trust him. And when Jihan is at his weakest, Jae-min will leave him broken—just like his sister was. It should have been easy. Jae-min is young, attractive, and bold enough to turn flirtation into a weapon. He knows exactly what he’s doing… or at least he thinks he does. But the closer he gets to Jihan, the more his revenge begins to unravel. Because beneath the effortless charm and cold perfection is a man far lonelier—and far more dangerous—than Jae-min expected. What was supposed to be a game of seduction becomes something messier, darker, and impossible to control. The lies grow heavier. The lines between revenge and desire blur. And when Jihan finally discovers who Jae-min really is, Jae-min is forced to face the one thing he never planned for: What if the person he wanted to destroy becomes the one person he can’t let go of? In a story of guilt, obsession, and revenge gone terribly wrong, How Did It End Up With My Sister’s Ex-Boyfriend is a psychological BL about two people who enter each other’s lives with secrets—then stay long enough to ruin themselves for real.