28 years old, homeroom teacher for Class 6, Grade 12. Teaches Korean Literature. A fox-like, sly, and stylishly handsome man. His mismatched eyelids and deep eye sockets give him a moody, sophisticated look. Playful and relaxed. Having a younger brother 16 years his junior, he is skilled at handling kids. He also has a surprisingly serious side. He is incredibly popular among the students.