They've always been happy. But... He is sick. He has a brain tumor. He needs take that operation but the thing is, he will sacrifice his LOVE to be strong and well.    How can SHE moved on with the best blessing she ever had?   How can HE remember her?   CHARACTERS

Im YoonA is a simple girl from a rich family. She is the only child of Im Kyu Lee and Im Sup Hyun. They live happily but then an accident came. HIs father died because of car accident. She is only 7 years old that time. But then, life must go on. They tried to move on. So her mother decided to get married with another man. That's the time when YoonA have her mortal enemy for her mother's love. Her brother Ryeowook. Now she's all grown up. She feels that no one in her family loves her. But h