Squadron

King stops by Saitama's apartment to rave about a sentai program named ZOO-MEN, comparing its squad of costumed fighters to the actual Hero Association. Genos shows up mid-conversation, flatly rejects King's question about the worth of team heroism, and passes along an assignment letter.

At the Z-City branch, four B-Class fighters are told to bring in a live wolf-level creature supposedly needed for medicine. The group heads into the woods dividing Z-City from Y-City under Wild Horn, who hands the newcomer nothing but a map. Pink Hornet and Trap Tengu join them, along with Smell Master, whose weapon is odor. When Saitama volunteers to step in should the plan collapse, an insulted Wild Horn shows off his gear. The team rigs traps and spots claw marks, while Saitama drifts toward a vending machine, notices a punched hole and strange prints, and is ignored when he raises the alarm.

Elsewhere, Guiches admits to a colleague that the animal is wanted alive only so its scales can be sold. Metal Knight phones in to reveal the beast's enclosure was rated for demon-level captives, and that its feed and surroundings had sped up both its size and its ferocity. Guiches waves off any S-Class request, betting the five recruits will cope.

Drawn by scent, Scaledon tumbles into a pit, wrenches loose, and trips a second snare. Smell Master's paralyzing odor fails, he is knocked aside, and the monster gulps the heroes down. Saitama arrives late, demands their release, and is swallowed too. Judging a live capture hopeless, he finds the trapped heroes in the stomach, kills the beast with one blow, and tells them the fault is shared. Privately he concludes that fiction and life differ and that solo work suits him. Afterward Bofoi decides to bench Guiches until things settle, musing on how pliable the Association's leadership is. Back home, King quizzes Saitama over a video game and, stung by his teammate's scorn for cooperation, declines to rescue his poisoned character.

Genos passes Saitama a letter that assigns him to a B-Class capture squad. Guiches is revealed to be lying about the mission, wanting the beast alive so its scales fetch money. Metal Knight warns that the escaped Scaledon outgrew a cage built for demon-level threats. The monster swallows the squad whole before Saitama, eaten as well, destroys it from within and frees them. Bofoi moves to sideline Guiches, and Saitama once more affirms that he prefers acting alone.

Released April 21, 2016 as a thirty-page extra tucked into the eleventh volume, the chapter carries the Viz title Rangers. Its cover features King alongside Saitama and Genos. The wider cast pulls in Bofoi, Guiches, and Scaledon, the doomed squad of Smell Master, Trap Tengu, Pink Hornet, and Wild Horn, plus the fictional ZOO-MEN broadcast. It follows the series' Holiday Special Chapter in sequence and comes just before Weapon.