Chiho lee
Appearing in s2, ep.119. He is 18 years old. Has been a habitual offender since his first year of middle school, has been in and out of juvenile detention centers several times, and is currently a quite vicious offender. Will hit women.
In the past, he is 18 years old despite being a freshmen. As he has been suspended for two years for his time in juvenile detention. It is revealed that he is indeed diagnosed as a psychopath. So he does whatever he wants.
Currently he beats his own class mates and when Sera wanted to know who is the strongest one which he responds with aggression. Has been gambling and beats up students of they don't pay up. When Sera doesn't pay, he was going to attack but Saeun defends her but he kicks her. He then fights Sera but as he hits, he also was hit back tremendously. He retaliates when a teacher arrived and forces him to reveal his actions. He refuse and threatens everyone if he did something. However, Sera boldly exposes him and leaves with the teacher.
Soon, he shows up at the roof and fights Sera but was down in one hit again. They continuous fight but he loses, turning himself into Sera's slave. He was bullied by her and is prohibited from the common things he do, making him extremely angered. At night, he ambush Sera with a knife to kill her. He hold no hesitation and when down, launched the knife into Sera's waist. He then hits her repeately but this lasted short as Sera pins him down and was going to stab him. Which he surrenders.
Was hospitalized and transferred to Kangsan High. Attempted to do what he has been doing but ordered by Sera, Jongsu and others bullied him to a high exten just like him.
- fun fact: his IQ is 78.