King of Undercover: I Beat Up the Prison Boss from the Start!

From the day I was born until I came of age, my father only came home once. The next day, he said he was going south to find work, abandoning his wife and child all over again. Then the military came and said my father was a deserter. The police came and said he was a criminal. From that day on, everyone called me the son of a deserter and a criminal. I gave up on myself, spending my days loafing around on the streets and waiting to die. Then one day, someone told me my father wasn't a criminal, much less a deserter. He was a hero. All the hurt and resentment I'd bottled up finally burst out! But I couldn't see him, because he'd died in action two months earlier. They hadn't even managed to bring his body back! I decided to find his remains myself. But once I set out on this path, I discovered that the world wasn't simply divided into black and white...