Joon has been hiding his true condition for awhile. He takes medication for it, but it only helps limit the pain. Continuing to function from day to day, he asks as if nothing is wrong. He has always been in love with Hyosung, but never confessed. He even wrote a love letter to her that he always keeps in his pocket - hoping - he musters up the courage. Writing series of reasons as to why he loves her so much, he keeps them in a box. Sadly, Hyosung loves Kikwang and barely notices Joon. They have occasional conversatons, only to have Kikwang sweep her away. He had dreamed of them being able to spend their lives together, but life just wouldn't allow it. 

Everyone hopes that for once the one they love will notice them, until someone better comes along...