Saitama and Genos are returning from the grocery store when they see King, S Class Hero Rank 7. King isn't actually the strongest man alive but an ordinary otaku who happened to be at the place where strong monsters were eliminated and given credit for defeating them. He is running from an enemy but Saitama rescues him. King realizes that Saitama had saved him in the past after saving him from being attacked yet again. Afterwards, Saitama plays video games with King while Genos gets upgrades fro
At the Hero Association meeting, Garou mocks both heroes and villains, declaring himself a monster and everyone his enemy. He brutally beats all present except Sitch to send a message. Meanwhile, Saitama relaxes at home playing King's stolen PSP, while Genos does chores. Speed-o'-Sound Sonic arrives searching for Saitama, leading to a fierce clash with Genos. Elsewhere, Fubuki, aka Hellish Blizzard, approaches Saitama, hoping to recruit him into her faction. When persuasion fails, she orders her
Silver Fang expels his pupil Charanko, who seeks out Saitama and Genos for answers. With King and Fubuki also visiting, Genos deduces that Charanko was dismissed because Garou, Bang's former student, has resurfaced, and Bang is trying to keep his pupil safe. That night, Charanko stumbles upon Garou confronting Mumen Rider. Before a fight begins, Tank Top Vegetarian and his crew intervene, but Garou defeats them. Tank Top Master arrives, giving Garou his first S-Class opponent. Though Tank Top Ma
As a child, Garou sympathized with monsters, believing they tried their hardest yet always lost simply for being "freaks". When told good guys always win, he vowed to become the ultimate monster and overturn that fate. In the present, Garou regains consciousness, with his memory hazy, and reunites with Tareo. Spotting Watchdog Man and Metal Bat, he sets his sights on them. Meanwhile, Saitama signs up for the fighting tournament using Charanko's entry. Reviewing contestants, he meets Sour Face, a
Metal Knight confronts Elder Centipede but fails to do any damage. Meanwhile, Garou defeats Metal Bat after a grueling fight, though he begrudgingly admits Metal Bat could have won with a single solid strike. When Metal Bat rises again to attack, his younger sister Zenko intervenes, forcing him to stop. Garou also relents, unwilling to harm a child, and leaves to seek Watchdog Man. Metal Bat collapses from accumulated injuries as Zenko prevents him from pursuing Elder Centipede. Elsewhere, C-Cla
Lightning Max is defeated by Suiryu, while Genos receives reports of monsters swarming near the tournament. Snakebite Snek wins his match against Benpatsu, but the announcers' plan to evacuate is stalled when Bakuzan insists it will ruin the event. Sourface beats Jakuman and eagerly reports his victory to "Charanko", unaware that the disguised Saitama is absent. In his own match, Saitama faces Bakuzan, who arrogantly boasts about humiliating him. However, when Bakuzan mocks his hair, Saitama kno
Child Emperor deploys his robot Underdog Man to analyze Eyesight's poison, but detonating it fails to kill the monster when she hardens her skin. Before she can finish him, Pig God intervenes and devours her, continuing his hunt for monsters in Y-City. Meanwhile, Garou sets his sights on Watchdog Man, only to be interrupted by another monster. Drive Knight interrogates a surviving creature for intel, while Death Gatling gathers heroes to battle Hundred Eyes Octopus. Flashy Flash cripples it with
Suiryu is awarded the tournament trophy after Saitama's disqualification, but the celebration is cut short when the monster Gouketsu, revealed as a former martial arts champion transformed by Orochi's monster cells, arrives with his army. He distributes cells to the competitors, with Choze and others mutating into monsters. Suiryu defeats Choze and bravely rejects Gouketsu's offer, hurling the cell back. In retaliation, Gouketsu orders his monster crows to attack and personally brutalizes Suiryu
Bakuzan recognizes Saitama as his previous opponent but before he can make his next move, Saitama instantly kills him with a single punch. Introducing himself as a hero, Saitama explains to Suiryu that he entered the martial arts tournament to learn about Garou and experience martial arts. Though Suiryu begs him to stay, fearing Gouketsu, Saitama leaves, only for Gouketsu's severed head to crash down moments later. Saitama casually returns, asking Suiryu not to tell anyone, and when Suiryu asks
Saitama keeps losing to King in video games matches. During a break, Saitama notices King's phone, which he explains is for hero emergencies. Meanwhile, Gyoro-Gyoro and Destrochloridum manipulate a Hero Association executive, pretending to negotiate co-existence between humans and monsters. Destrochloridum then kills the executive, revealing the deception and declaring the monsters' true goal: a full-scale war against the Hero Association. Before attacking the remaining executives, Destrochlorid
Death Gatling explains why he and other A-Class heroes targeted Garou: to prove that lower-ranked heroes, often overlooked in favor of the S-Class, also risk everything. The group attacks, but Garou systematically defeats Chain Toad, Shooter, Gun Gun, and Wildhorn. Cornered, Glasses recalls his past struggles in Fubuki's group and how Saitama once encouraged him to focus on progress instead of failure. Despite Glasses' resolve, Garou quickly defeats him and Stinger, leaving only Death Gatling le
Silverfang and Bomb catch up with Garou while the hero hunter is battling Genos, starting a whirlwind battle that draws in more and more combatants as it marches towards its hair-raising climax!