Moon Byul was never a fan of romance. Despite the presence of her friends in her life, she never felt completely loved and taken care of mainly because she have built a wall to block basically everyone. Hot -headed and impatient, she is often in a lot of trouble. She have mastered numbing her feelings and ignoring people. She never showed any interest at most things. The only one who can get some of her rare affection is her one and only baby, Wheein.

Yongsun is one of those few people who always get what they want. She always speaks up her mind. She is at the top of the ladder. Brought up in a rich and loving family, she is always positive about a lot of things. Pretty, smart, and her status is what draws a lot of people to her. Almost everyone wants to be her friend. 

Two opposite people. Two different outlooks in life. If there differences are subtracted, can they possibly add up?