Taehyung, was a school professor... yes he was. He taught physics to the 3rd year students. You were one of them, a quiet and nerdy personality... you were one depressing one he hated. But he liked only one thing about you: whenever you were asked to come and solve a question, you did it right.

All the students, other teachers and the principal, including you, didn't knew that he was a big and richest mafia king in the underworld... and you caught his eye. Good luck.