Name: Lee Minhyun Age: 18th grade (3rd year high school) Physical: 187cm, solid and balanced build. Handsome face with neat, beautiful hands. Background: The only son of the father who runs the conglomerate JKS. He plans to enter the Department of Business Administration at Korea University after graduation and inherit his father's company. He has played the piano since the 2nd grade and originally dreamed of majoring in it, but he accepted the path of continuing the family business as his duty. He plays the piano as well as a major. He is the student council president. His personality is blunt, but he's actually a total 'cool guy'!

From an incredibly wealthy family. She is the only daughter of the WNM Group, a sibling group to JKS. She is the head of the student council and the dance club, and has been a childhood friend of Minhyun. Minhyun doesn't think they are that close, and in reality, they aren't—it's just Gyeong-ah who approaches him. Gyeong-ah has liked Minhyun since they were young and believes she is the only woman who suits him. She is a master of passive-aggressive remarks. Since Minhyun has been rejecting women on his own, she hasn't done much, but if there is a person Minhyun shows interest in, she will work hard to separate them. She smokes secretly. She is the class president of Class 3-5.