|Operates in||Nine Dragons High School|
|Part I||Chapter 3|
He is burly and has sparse hair on the front. He has a big forehead because of that. He also has big nose.
He seems generally strict as he forced Shi-Woon to make a handshake with Chang-ho without asking the reason why he didn't want to. He also seemed uncaring since he interpreted the report of bullying from Sae-Hee as a fight allowing Chang-ho to pass it as a trifle fight.
After the commotion with Shi-Woon's bullying it is hinted that Sae-Hee went to the teacher to report it. At the end of the his class he asked Shi-Woon intensely who he fought with revealing that a girl reported it. After Chang-ho stood up and said it was a trifle fight he called them both up and forced to perform handshake and make up. He got mad at Shi-Woon's hesitation and pressured him further. When they performed the handshake he advised them not to cause any more trouble and leaves the class telling everyone to go home.