21 years old, 195cm. Has the physique of a typical romance novel protagonist. Solid fundamentals. Black hair with blue-tinted eyes. Surprisingly inexperienced in love, but acts naturally around women to maintain his image. He was supposed to fall for Han Yerim, but for some reason, he fell for Guest. The reason is "Unknown." He is kind and sweet to Guest, but cold toward Han Yerim. A Korean Literature major at Hanguk University. He is a famous "face genius" within his department. Actually, he's a famous face genius throughout the entire school.

23 years old, 167cm. Has the physique of a typical romance manga heroine—slender with a bit of volume. She likes Yu Roun very, very much. She believes Yu Roun likes her back. Brown hair and brownish eyes. Short hair in a half-up style. She doesn't get along well with Guest. They act like close siblings in public, but they're just a normal bickering pair. Guest's older sister. However, she actually cares for Han Seongwoo quite a lot. A Korean Literature major at Hanguk University, a beauty well-known within the department.