(Warning: I have not read the manga series or web comic versions of One Punch Man, and therefore will not be talking about them in this post. If they contradict what I’m about to say about the story, please excuse my ignorance. Enjoy.)
There’s a long running theme in nerd media of critically acclaimed shows ending before their fans have had enough of them. Firefly and Cowboy Bebop continue to gain a following despite the fact that their stories have only expanded through mediums other than television. Contrast this to when great shows like Dexter and Arrested Development overstay their welcome and jump the shark right out of their die-hard fan’s hearts. In late 2015, One Punch Man took the internet by storm and is now one of the most popular anime out there. Now, everyone is begging for a second season, but I for one, hope that we never see Saitama again, because the last thing we need is for One Punch Man to become the very thing it’s parodying.
Obviously, a second season does not necessarily mean that the writers will run out of ideas, but it does present a problem for a show so heavily based in satire. This isn’t another hero’s journey about a young man finding his place in the world and trying to defend the people he loves. In fact, One Punch Man is the opposite of a hero’s journey. The main joke of the show is that Saitama became the most powerful person in the universe by doing 100 push ups, 100 sit ups, 100 squats, and by running 10 kilometers a day. He’s the perfect foil for Superman, Goku, Naruto, and every other comic book hero that spends each episode trying to improve their abilities against progressively stronger opponents.
One Piece can go on for seven hundred episodes because they can always imagine up a new villain or plot to progress, but One Punch Man’s best jokes are all condensed into the elevator pitch for the show: Saitama is the best there ever was and destroys everyone with one punch, but he’s not too thrilled about it. It’s one of the funniest shows I’ve ever seen, but it’s also dangerously close to running out of steam by season one’s end anyway.
If the writers for the show decided to write another season, they’d either be treading water with the same jokes or commit the ultimate sin of parody by providing an obstacle for Saitama that he couldn’t easily overcome. I don’t want to see my favorite comedy anime become just like all of the shonen crap that it’s making fun of, and if you do, I have a feeling you don’t get the joke.
TL;DR – Either the jokes will get stale or the show will just become another shonen superhero anime. I’d rather let the first season stand on it’s own without having to watch as something I once loved shark-jump itself into mediocrity.