Han-moo, Kang

Kang serves as the summer school teacher, aiming to assist children with the issues that make school difficult for them. He primarily addresses this by organizing numerous outdoor physical activities to keep them occupied, exercising, and active. Although somewhat strict, he is good-natured, yet he displays a weakness for attractive women. This becomes evident when he meets Yobi's Mother (who is actually Yobi in disguise); he appears instantly drawn to her and fabricates excuses to ensure she returns to the school.