Female lead: Im Yoona Male lead: Jang Keun Suk
Hana is played by Yoona she is the the daughter of yoon hee . The story starts off as yoon hees story about a love that was never completed during college. and ends with fate stepping in.
Seo in ha is played by Jang Suk who is spoiled and is a very big play boy he can make anyone fall in love in 3 seconds or so he thought. Seo in ha is the son of seo in ha senior who just so happens to be the first love of yoon hees.
Without saying to much this drama was my very first drama and it is still my favorite. If you haven't watched it give it a try. Warning the beginning is very slow please give it time! Good luck-jojo