I don't even know myself at allI thought I would be happy by now

Jessica Jung loves her bestfriend, Choi Seunghyun. Unfortunately, Seunghyun dated other girl, her bestfriend Tiffany Hwang. It was too much to bear so she went away, without saying any word to her friends. Is that the only reason why she left? Fate twisted their past, will they be together? What about their "Promise Kiss"?

Jessica got pregnant and the most horrible thing is she didn't know HOW, WHEN, AND WHERE.How in the world will a EVER- GIRL will got pregnant?   It is a cute story of Choi Seunghyun and Jessica Jung. TOPSICA. Kinda weird.

Jessica call him 'Devil Choi' ever since they got married.He is a grumpy, moody and jerkest devil in the world.  But time comes, Mark Choi said "I'll be better". Is it really possible for a devil to be 'better'? Two lives, two different people becomes one.     It is a TOPSICA story (Choi Seunghyun and Jessica Jung) with the SNSD members and Bigbang members. Mark Choi is Choi Senghyun XDDD

This story is based on the move 'One Day', but of course with some twists and changes in it.  It is a story of the journey of two best friends and what it took for them to realize that they were meant to be.