On and on: The parody

A long time ago, there was two friends. A loving, dutiflul girl called Hwa-young was head over heels in love with the boy next door. His name was Cha Hakyeon and he was secrtly dating her older sister, this broke Hwa-young. What happens when Hwa-young meets a boy who looks strangely like her past love, but discovers a deadly secret that could destroy their romance forever or even kill her? Will Hwa-young strive to rekindle her love or find another way of getting rid of her unrequited love... If she does manage to find love again, will she succeed in rebuilding her life for the better or will other forces tear them apart? For there is another man who has his eye on her...
Expect plenty of drama and romance along the journey of Hakyeon and his new family.