When love turns cold.

story about childhood friends Moonbyul and Solar.    Moonbyul who confess her love to Solar and Solar who rejected Moonbyul's confession. But regret it later.   "I let you go unnie, it's time for you to do the same for me.Yes you were my priority but not anymore. Its already enough that you neglected me, i can't take more pain."     "I'm so sorry Byul ah..You are so important to me,don't let me go please. Im already regretting of what i've done