It's been almost 15 years since I watched Naoki Urasawa's Monster, but I still remember some scenes. One of them that still marks me is when Johann is talking to a procuress and he talks about how evil he is, and how he'll be the last man on earth and all that nihilist edgelord schtick (that he learns is pointless later), and the procuress than says something in reply so vile that Johann's reaction is "Jesus Christ, that's messed up! Mr. Roberto, kill her now!"
I'm probably remembering wrong and it's definitely not accurate, but I feel one of the lessons that stuck with me is how the search for the "ultimate evil" might be pointless, because no matter how depraved you try to be, humans can always think of something worse, sometimes almost accidentally. I'm also thinking of Screwtape Letters, where demons are almost ineffective, they still have to rely on humans doing the hard work. After watching episode 14 of Psycho-Pass, I don't think I've seen greater evil based on banality and indifference than that scene, but I'd better there's always someone making something worse.
