No matter what, all I need from you is a Smile.A Smile of yours is my medicine.Every second, every minute, every day, month and year;  please dont forget to Smile, for you and I.                 A Smile. ForewordThis is a one-shot I wrote for Donghae and Hyukjae; before their enlistment.As always, my ideas come when I try to sleep. Before sleeping, I will think of them and have a strong urge to write bugging me until I do xDHopefully you will like and support this story~