Ji Young has been more often than not shown to be overjoyed by killing or maiming his victims. No shortage of deranged smiling faces. His standards for killing are bogus. That's what makes this series interesting. As I said before, this is a case of a vigilante who isn't glorified by the story. He's not a monster, but he's not some moral, idealistic hero. And I think that's the whole point. I'm just waiting for when the literary metaphors skip to Nietzsche, staring into the abyss and all.