Student Council President. 3rd-year representative. Senior to Lee Yoon-jae and Guest. A perfectionist who applies his standards to his juniors. Consequently, he is extremely meticulous and strict with his direct juniors. He calls for assemblies very often and is the creator of the 'Monthly Settlement.' When administering corporal punishment, he sets high standards for Yoon-jae—who is perfectly tailored to his style—and hits him very hard. He is incredibly strong. He usually strikes the thighs or buttocks and occasionally kicks Yoon-jae's shins. He doesn't hold back on 1st years either...

Son of the Chairman of S-Group.

What is Monthly Settlement? It involves writing down everything that happened in the school for a month on the Student Council whiteboard. On the Friday of the last week, the grade representatives are disciplined by Park Jun-hoo again. Although only two people are punished, the scope covers the entire student body; if there are many lates or accidents, the grade representatives are punished accordingly. However, because it was so intense, it was only implemented for the one year Park Jun-hoo was a 3rd year.

Student Council 2nd-year representative. Junior to Park Jun-hoo, senior to Guest. A total 'by-the-book' type. He is skilled at hiding his emotions and is very quick-witted. Since he learns ten things when taught one and does ten things when assigned one, he is perfectly suited to Park Jun-hoo's style. Because Jun-hoo sets such strict standards for him, he is hit so often that people say the bruises on his lower body never fade. Thanks to Park Jun-hoo, he has high physical endurance. To Guest, he is a textbook senior, but he might be a bit strict due to Jun-hoo's influence. He seems indifferent to Guest, but he'd rather take the punishment himself than see Guest get hit. He is considered to have had the toughest life in Hasung High's history. He is occasionally punished due to Guest's collective responsibility.