Saitama and Tatsumaki clash across vast distances until Saitama suggests heading back, only for Tatsumaki to drag him by the head. Speed-o’-Sound Sonic ambushes them, but Tatsumaki deflects his shurikens, causing him to slip and knock himself out. Back at HQ, Saitama breaks free as Tatsumaki claims she was merely testing him and could win…
Saitama and Tatsumaki continue fighting, but Saitama grows bored while Tatsumaki blasts him away. Meanwhile, Fubuki leaves the Blizzard Group to act independently. In N-City, hero Feather is badly injured by the Iron Fist gang while trying to save Erika, who is secretly allied with their leader—until Saitama and Tatsumaki arrive and crush the gang….
A family relocates into Hero Association HQ as Saitama and Tatsumaki crash nearby, still arguing. Tatsumaki violently spins and slams him, accusing him of liking her, but Saitama denies it while stubbornly holding on. As Apollo escapes, their fight escalates and endangers the moving family—until both heroes instinctively save them. Tatsumaki continues mocking Saitama, who,…
Air recovers in the hospital with Forte, who suspects Saitama used psychic powers; Chain’n’Toad and Butterfly DX visit them. Meanwhile, Saitama stops Tatsumaki from punishing the Blizzard Group; she tries to hurl him away with her powers, but he resists, and the two leave together. Elsewhere, the freed monsters—Tongue Stretcher, Beer Bellee, and Man-Eating Capybara—flee…
Apollo takes Fubuki hostage with poison, forcing Tatsumaki to stand down while he unleashes Demon-level monsters—until Saitama suddenly appears, drenched in their remains. Tatsumaki quickly turns the tables by neutralizing the toxin, poisoning and capturing Apollo, then scolds the Blizzard Group—only for Saitama to interrupt her tirade.
A flashback shows Fubuki and Psykos’ past friendship and Psykos’ descent into madness. In the present, a Tsukuyomi agent tries to capture Psykos, prompting Tatsumaki to intervene and a battle to erupt. Amid the chaos, Saitama falls through the floor into a lower level, where he casually encounters imprisoned monsters, oblivious to the conflict above.
Saitama and Forte agree to fight, with the loser stuck babysitting Rover and Black Sperm—until Forte is suddenly hit by a car driven by the Blizzard Group, stopping the match. Meanwhile, a mysterious agent infiltrates the prison holding Psykos, defeats her, and reveals plans to use her for Tsukuyomi’s research. Saitama joins Fubuki’s group as…
Fubuki and the Blizzard Group head out cautiously, anticipating trouble. Sweet Mask, focused on analyzing Saitama, dismisses an idol group seeking guidance for their lack of strength. Meanwhile, Saitama meets his new A-Class neighbors—Chain’n’toad, Butterfly DX, and Forte. The introductions quickly turn tense, as Saitama’s indifference sparks a potential clash with Forte.
Bofoi realizes Saitama’s power surpasses even the S-Class after destroying his robots. Two days earlier, Sitch, Genos, Flashy Flash, Sweet Mask, Zombieman, and Sekingar discussed the prophecy and the mysterious entity “God.” Zombieman recalls Homeless Emperor’s warning, while Flashy Flash remembers a similar encounter. Sitch explains Blast’s search for a cube and past dealings with…
Black Sperm and Overgrown Rover follow Saitama to the Hero Association HQ in A-City. Officials pitch ultra-secure, monster-proof apartments for A-Class heroes, boasting Metal Knight’s AI defense, though the crowd doubts human reliability. Alarms blare as Saitama enters with the two monsters, triggering automated security robots. He casually destroys them all, leaving heroes shocked at…