I Don't Eat Trash, He's All Yours

Park Ji-hye hides her true identity as an heiress for love, only to suffer heartbreak at the hands of her husband, Shin Ho-yun. He cheats on her with his childhood sweetheart, and the child Ji-hye raises is actually theirs. With the help of her powerful brother, Ji-hye reclaims her rightful place and rises again, turning her miserable life around.