Chapter 220 (Online)

Blue keeps hunting for Sweet Mask and thinks back on his run-in with Genos, who blocked him from chasing Saitama as Saitama carried Sweet Mask away. Genos maintained that Saitama acted of his own accord rather than on the Hero Association's orders, an explanation Blue found senseless; when Blue pressed for more, Genos simply walked off. In the present, Blue concludes that Association interference let Sweet Mask slip away, decides its leadership and heroes are rotten through and through, and dismisses any partnership with them before a monster sighting draws him out.

Inside the Association headquarters at the Superducks Coffee shop, Forte tells Chain'n'toad and Butterfly DX that the Neo Heroes have recruited him. The other two admit they received offers as well, and all three begin weighing a jump to the new organization. Watching from nearby, Black Sperm muses that the Association is still a fledgling body already being shoved aside by a rival, and that heroes ought to cooperate rather than compete. He decides the Monster Association assault served a purpose after all. He briefly wonders whether the Neo Heroes pose a threat, then waves the thought away, viewing humans as a fragile species, a mass of ants that cannot fell a great beast.

He reasons further that the Association was itself unsettling for recklessly unleashing forces as destructive as Tatsumaki and Saitama, whereas the Neo Heroes come across as courteous and restrained. Weakening the Association, he figures, is a clear advantage, and this new group might ease the strain on a stressed humanity for a while. Right then Saitama returns carrying dog food he bought for Overgrown Rover, and moments later a cluster of shadowy figures approach to recruit him as a candidate for an executive post.

Blue recalls Genos blocking his pursuit of Saitama and Sweet Mask, then writes off any cooperation with the Hero Association. Forte, Chain'n'toad, and Butterfly DX consider defecting to the Neo Heroes. Black Sperm reflects on the rivalry between the two organizations. Saitama returns with dog food and is approached by shadowy figures to become an executive candidate.

Dai-batteki, released on December 4, 2025, is the two hundred twentieth online chapter and part of the Neo Heroes Uprising Arc. It combines webcomic chapters 124 and 125. Viz Media titles it Great Contributions. Mizuki appears on the cover.