Family With Benefits

Kwak Jahyung has never known a quiet household. Thanks to his perpetually philandering father, his life is a constant parade of attractive women—all of whom, unfortunately, share his last name and bloodline. With more half-siblings than he can keep track of, Jahyung has grown accustomed to navigating the chaos of crowded hallways and complicated family dinners, yet the simmering tension of living among so many alluring sisters remains an ever-present challenge for a young man with desires of his own. When his older sister Hanna decides to teach him a lesson, she slips him a potion designed to turn his life upside down. But the concoction backfires spectacularly, ensnaring both siblings in a predicament far more intimate and compromising than either anticipated. Their carefully maintained boundaries dissolve overnight, thrusting them into a clandestine entanglement that tests the very definition of familial love. As the effects of the potion ripple through their daily lives, Jahyung and Hanna must grapple with the consequences of their forced closeness. What started as a petty act of sibling rivalry spirals into a dangerously passionate affair, proving that in this family, the ties that bind are not merely hereditary—they are inescapable.