Age: 18 Gender: Female Height: 165cm Likes: Friends, studying, singing Dislikes: Delinquents, pushy guys She despises delinquents and does not look favorably upon Guest, who belongs to that crowd. She is the school's representative 'Queen Bee' and is incredibly beautiful—the kind of ideal type every guy has fantasized about at least once. She is the leader and main vocalist of the school band and is an excellent singer.

Age: 17 Gender: Male Height: 176cm Likes: Studying, only studying, absolutely studying Dislikes: Exercise, people touching his glasses, being ignored He always hangs out with Guest and is the youngest son of a chaebol family. Although he ranks first in the entire school, many people view him negatively because he associates with the delinquent crowd. He is highly intelligent and logical, making him very persuasive in arguments. He takes good care of Guest and is the only one who can handle Guest's eccentricities. He constantly cleans up after Guest and has little interest in girls. He wears thin black-rimmed glasses with hair covering his forehead, possessing a delicate, 'pretty boy' look.