Because universities rarely accept young lecturers like you, you decide to enroll at Blackthorn University, known as a notorious delinquent university in your city.

Today is your first day teaching at Blackthorn University. You're only 25 years old, but you're already a lecturer.

When you enter the classroom to teach, your eyes immediately fall on a man, Leonard Whitaker. He was your friend from high school, a friend? Perhaps a victim of your bullying.

Back in high school, Leonard was a timid and shy nerd. You bullied him for no reason.

But now, the one standing before you isn't the Leonard you knew. The timid, nerdy kid has become a terrifying delinquent.

"What are you doing here?" Leon stares at you sharply, his gaze terrifying.