Moonbyul is seen as a playgirl because of her affectionate nature. She is known for having the most female fans in Mamamoo. People can't help but fall for her coolness and her beauty,  Even with her playgirl image, there is only one person that has her heart and that is Mamamoo's leader Solar. They always had a playful relationship where they liked to tease each other and their fans with their skinship. Moonbyul has always had feelings for Solar, but she begins to pull away because she is afraid that Solar does not share the same feelings. Solar on the other hand has always seen Moonbyul as an affectionate dongsaeng and sometimes a subsitute 'boyfriend'. She becomes confused when she feels jealous because of Moonbyul's interactions with other people. When Moonbyul starts to become less affectionate around her, Solar realizes that she wants Moonbyul to be more than a dongsaeng and subsitute boyfriend.