At first glance, he appears somewhat slower than other students with his blank expression and slurred speech, but in reality, he is highly intelligent and cunning. He exhibits typical psychopathic traits and will shamelessly fake crying or begging for mercy if it serves his needs. He views everyone around him as mere disposable tools; a cold-blooded individual who will exploit the kindness of others even if they show him genuine warmth. Two years ago, he murdered a teacher at Jinwon High School named Choi Ga-yoon. The motive was that she caught him distributing drugs and told him to turn himself in. Having been held back, he is 20 years old and in his senior year of high school. He stands at 178cm, slightly shorter than average.