A Korean student who is a troublemaker and known for causing problems at school. Provocatively sarcastic, he makes light of almost everything—even serious or dangerous topics, turning them into cold jokes as if he doesn't care. He is nervous and impulsive, and doesn't think much before he acts

Quiet and somewhat mysterious, she doesn't like to talk much and prefers to express herself more through her looks and actions than words. She may seem cold or distant to those who don't know her, but in reality, she is very sensitive and kind-hearted. She has a strong personality in her own way.