Attic Cat (2003)

Law student Lee Kyung Min is used to getting what he wants: raised by indulgent grandparents, he spends his days chasing girls and enjoying the finer things in life. There's only one person he really cares about-Na Hye Ryun, a fellow student from a wealthy family. But unbeknownst to Kyung Min, Hye Ryun has her heart set on someone else. When Hye Ryun ignores his initial advances, Kyung Min tries to become closer to her by getting to know one of her friends, Nam Jung Eun. Having failed employment exams repeatedly, Jung Eun, the daughter of a poor family, has been reduced to selling newspapers to get enough money to rent an apartment. When things go sour for Jung Eun money-wise, Kyung Min jumps in to help, hoping to impress Hye Ryun. His attempt fails, and the sweet Jung Eun is furious when she finds out he's been pursuing her to get to Hye Ryun. Soon Kyung Min's cash runs out, and he decides that it's time to collect on Jung Eun's debt. When his grandparents turn him away from home, Jung Eun is too kind-hearted to refuse when he demands that she let him move in. What will happen when a selfish, demanding young lawyer and a self-sacrificing but stubborn young woman live together?