Kiseop and Tiffany are together since they were teenager until now that they are in their 20s.  Through the ups and downs of their relationship, theyir love for each other becomes stronger and more passionate. But although they are very loyal and strong; their biggest enemy, that they can't fight with; it's their death; the time of their death.  One day, when Tiffany goes to her doctor for a check-up because her head really hurts badly; the doctor said that she has a leuke