At first, I thought it was about a nice guy trying to act tough, then a chuuni, and finally an unfortunate asshole. There's no way of telling how far his villain activities went before this started. My assumption is he was never documented but did enough bad deeds to earn himself a life sentence. Things are getting pretty heated in the latest chapters, like a set up for a mind game. EDIT: I have a suspicion that this got axed, the ending is pretty sudden. A whole lot of wasted potential that turns trash after the first few chapters.
Incompetent Villain