Garou Introduction Arc

Serving as the tenth arc of the series and the launch of the Human Monster Saga, this installment shifts the spotlight onto Garou, a disciple cast out of Bang's school. It splits its attention between Genos deepening his own quest for vengeance and a bizarre recruitment meeting that becomes the stage for Garou's violent debut.

Genos brings salvaged G4 components to Dr. Kuseno, asking to be made stronger. The scientist agrees but frets over his recklessness, urging him not to face the cyborg who destroyed his hometown alone. Elsewhere, Sitch assembles the world's criminals at headquarters, insisting the summons is no trap and pointing to his three A-Class bodyguards, Heavy Tank Fundoshi, Blue Fire, and Magic Trick Man. Speed-o'-Sound Sonic crashes the meeting looking for Saitama, scatters the recruitment pamphlets, and leaves once he learns his rival is absent.

Sitch explains that the coming disaster demands every capable fighter, offering rewards to any criminal willing to defend the planet. The pitch is interrupted when a young man insists the prophecy concerns him, revealing himself as Garou. Eager only to test who among them is strongest, he starts choking Magic Trick Man while recalling a childhood spent cheering for cartoon villains, a bitterness that hardened into his ambition to become the ultimate monster and overturn the rule that good always triumphs.

Heavy Tank Loincloth rushes to intervene and has his arm snapped in a single exchange. When the criminals protest that they oppose the heroes too, Garou coldly answers that he sides with monsters, not humans, and tears off Blue Fire's arm to prove it. He then flattens the entire room.

With every criminal beaten, Garou announces his campaign against the heroes and vows that within half a year he will grow strong enough to challenge King, the man reputed to be the planet's mightiest. His hero hunt has officially begun, and Blue Fire is left permanently maimed. Meanwhile, Sonic departs still fixated on one day surpassing Saitama, who spends the chaos casually gaming with King.