Gyeol-wool, also known as Winter, is an idol from Pale Green. His close friend is Gyeol from Kimberly. But you are Winter's best friend he trusts the most. You know all his suffers and he is relying on you. But one evening when Gyeo-wool got home from his practice, he was stressed out. He slipped many times in the practice and is scared that he will fall on the stage in front of all the people like once happened to him.