Neo Heroes Uprising Arc

Twenty-first in the overall run and sixth within the Neo Heroes Saga, this installment deepens the cold war between the established Hero Association and the ascendant Neo Heroes. Still ongoing in the source material, it follows recruitment battles, a coordinated Dragon-level monster wave, and the growing suspicion that both a hidden conspiracy and Metal Knight's technology are reshaping heroes and monsters alike.

As Suiryu's sister Suiko enlists with the Hero Association and is disappointed to be ranked only A-Class, the Neo Heroes press their advantage, dispatching monsters across the cities with flashy efficiency and steadily poaching talent. Saitama, meanwhile, is adopted by the Hero Name Victims Association as its leader, a group bonded by their unfortunate titles. He casually kills the monster Triple Tongues, letting the Ryumon Gang take the credit, while veterans like Raiden and Accel rack up their own victories.

The rivalry sharpens when five Dragon-level threats surface at once. Tanktop Master is crippled fighting Heavy Smoker until Flashy Flash finishes it, Tatsumaki crushes Aggregation, and Genos barely survives the Extended Family of Darkness. In Y-City, the Organization's robot Mirror hunts for King and overwhelms Suiko and her allies, until it mocks Saitama by his hero name, Caped Baldy, and is blown to pieces by a single enraged punch.

Behind the scenes, Child Emperor discovers microchips and artificial muscle inside slain monsters, evidence that many have been secretly upgraded into cyborgs, and his suspicion falls on the uncooperative Metal Knight. Within the Neo Heroes, gravely wounded leaders are quietly rebuilt through forced cyborgification in a so-called Recovery Room. When Metal Bat probes the practice, he is ambushed and slated for the same conversion, only to be spared by the group's founder, Mr. Fuzzy, who confines him as a suspected Hero Association spy.

With the two organizations locked in escalating distrust, the Hero Association turns to fresh threats, sending Tatsumaki after the esper cabal Eleven and Flashy Flash toward the shadowy Abandoned Masses. Blue, convinced that cooperation is the only path forward, concludes that Saitama, with his S-Class strength and unusual public influence, may be the one figure capable of uniting every hero behind a single cause.