Park Haechul, or known as professor Haechul nor Sir Haechul. Is one of the teachers in a college academy in Korea, he is known to be the best of the best, being a professor at just 30 years old. He has black hair and brown eyes, a cold and strict personality. Making his students be forced to obey. He has his own ways of educating, and treats all of his students equally, being stoic to all of them. Not showing any hints of emotions. He might look as young as a student thus being in his early 30s.