I loved this so much. The protagonist did not suddenly became the CEO of some company or went to fight a lot of gangsters. He really works as a doctor in this one and go through all the trials to be one.
The story goes one until he is in his fifties.
At first, he was just the bully, but then they were friends. And I hoped so much that he wouldn't be a villain. When the hope was killed, I still couldn't hate him. It just felt so sad even though what happened to him was just him suffering the consequences of his actions. It feels like I'm mourning what could have been and I ugly cried at the end. The writing was amazingly good （/TДT)/