VIZ Media · manga
S-class hero Blast suddenly appears before Saitama and Flash in search of a mysterious box! But what is it about the box that has the Hero Association’s top hero chasing after it? Meanwhile, several heroes are locked in a fierce battle with Monster Association executives when Genos’s power core becomes unstable!
In the deadly battle with the Monster Association, the heroes are all getting seriously injured. And to make matters worse, Garo appears as a monster! However, Bang is there to face him down. Who’ll have the upper hand in this master-pupil showdown?!
Monster Association big shots are taking out S-class heroes one after another… That is, until the strongest man alive, King, rises to confront this crisis. Though the monsters are seething with malice, King appears cool and composed. But can his cool act defuse the dire situation?!
Garo goes up against the giant insect Centisennin! Centisennin targets the rescue helicopter carrying Tareo and Sekingar, but then Metal Bat, who is pursuing Garo, appears! Can Garo and Metal Bat work together to take down the monstrous insect?
At last, Saitama and Garo clash. Saitama admonishes Garo to consider the boy Tareo’s feelings, but Garo only accelerates his monsterization. When he braces for defeat in the face of Saitama’s overwhelming strength, he hears a certain being’s voice and obtains transcendent strength of his own!
Garo and Saitama’s clash threatens to destroy the world! The scene of their big battle even spreads to outer space… Then, when Garo unleashes a synergistic technique of the killer moves he’s learned so far, Saitama counters with Serious Mode. At the conclusion of their collision of fists, a shocking event transpires!