One-Punch Man — Chapter 4

One-Punch Man Chapter 4 is a brilliant exercise in comedic subversion that perfectly encapsulates the core tragedy of Saitama's existence. The chapter opens with what appears to be the ultimate payoff fans have been waiting for, an epic, large-scale invasion by the Subterraneans. In his dream, Saitama finally gets the battle he craves. He faces a massive, seemingly unstoppable horde of underground monsters led by a colossal king, and the fight is everything he has been missing. It is prolonged, desperate, and thrilling, pushing him to his absolute limits over days of combat. Murata's art in this sequence is spectacular, delivering dynamic, highly detailed double-page spreads filled with crumbling cities and desperate action that makes the dream feel like a genuine, high-stakes shounen climax. The genius of the chapter lies in the immediate and brutal contrast when Saitama wakes up. The real Subterranean invasion has indeed begun, but it is nothing like the dream. The actual monsters are weak, poorly designed, and almost comically unimpressive. Where dream Saitama struggled for survival, real Saitama dispatches the entire threat, including their king, with a single, almost annoyed punch before he has even fully processed what is happening. This anticlimax is not just a joke, it is profound character development. It visualizes Saitama's existential boredom in the most painful way possible. The only place he can find a worthy opponent is in his own subconscious. This juxtaposition deepens the emotional theme of the early arc, the loneliness of absolute power. Saitama's disappointed expression after his effortless victory says more than any dialogue could. He is not happy to have saved the city, he is hollow because he was denied the struggle that gives a hero's life meaning. The chapter masterfully progresses the plot by establishing the series' central irony on a larger scale than the earlier Vaccine Man or Crabrante encounters. It is no longer just about one monster being too weak, it is about an entire civilization-ending threat failing to cure his ennui, cementing the idea that for Saitama, the real enemy was never the monsters outside, but the emptiness within.