New JAA Arc

Picking up after the JAA Jail Arc, this stretch of the story opens with a grim shift in the balance of power. The Order chooses to fall in behind Uzuki's organization, backing his vision of a new age in which killing is no longer the domain of licensed professionals but something civilians are pushed into against each other. Sakamoto's group stands as the counterweight, trying to stop the chaos that Uzuki has unleashed from swallowing the city. At over the length of the prior record holder, the arc has grown into the largest single storyline the manga has produced.

The conflict fans out across the city as former enemies pick sides against Uzuki's design. Seba, Mafuyu, Kaji, Toramaru, and Amane resolve to shut the plan down, while Shishiba and Osaragi move against Uzuki only to be intercepted by the Order's own members, an encounter that also opens a window into the pair's shared past. Gozu is finally shown in full, and Asakura and Kashima throw their support behind Shin as he works to calm the streets. Shin, meanwhile, commits to standing beside Sakamoto until the older assassin can climb out of his trauma.

The struggle escalates toward Tokyo Tower, where Uzuki heads with the aim of eliminating Shin. Seba manages to neutralize the weapons driving the bloodshed, helped indirectly by Shin, who reaches a point where he can command every member of both the Order and the enemy organization at once. The turning point comes when Uzuki stabs Sakamoto, only for Shin to bring him back using his ability. In the wake of that, Shishiba, Kamihate, Nagumo, and Osaragi set out together to hunt Uzuki down.

The arc reshuffles the board heading into the endgame. Oki lets slip to Nagumo that the reborn JAA has fresh recruits, ushering in a new wave of killers including a cop, a masked figure, a babysitter, and the Saionji siblings Shiina and Kippei. Gozu is slain by Shishiba, and it comes to light that Gaku survived only because of Kashima's intervention. With Sakamoto revived and much of the enemy roster thinning out, the surviving Order defectors close ranks around the goal of ending Uzuki for good.