Haruka steals the last void genome ampule from the bowels of GHQ and heads to the Kuhouin manor, but her old friend Kurachi leads her to an office where remnants of Funeral Parlor are holed up. Segai infiltrates the office and Ogumo is killed protecting Haruka, who is swept away by Argo to another hideout. There, Ayase volunteers to inject herself with the genome, but Segai shows up before she can. The ampoule trades hands a couple times before rolling away and into the hands of Shu, who injects it, forms a new right hand, and defeats Segai, absorbing Tamadate’s cancer in the process. He vows to bear all of the virus, and all the bad will with it.
We now have ourselves two kings: “Unsightly Idol” Gai, and the re-crowned runt Shu. Gai’s goals remain somewhat hazy; but Shu’s job is clear: get Gai; end the suffering of his people. The manner in which he got that crown back is not without many moments of incredible luck and circumstance, and his ultimately victorious battle strained credulity at other moments, but we’ll cut the series some slack; it’s almost the endgame, and as Segai says, this isn’t the time to hold back (though he wasn’t talking about logic). But yeah, Segai’s dead now. We won’t miss him that much, he’d become another fairly bland military sadist.
It’s just as well Shu arrived on the scene when and where he did; Ayase was on the ground and about to be killed by Segai (who had plenty of time to do so but didn’t) and even if she’d retrieved the ampoule, there’s no guarantee her body wouldn’t instantly reject it and kill her anyway. Shu’s not-mother insists that if he takes it again he won’t survive, and she turns out to be right about whether he’ll die. She didn’t say when, though. Perhaps he’ll live long enough to save the world, sacrificing himself in the process, and at least in his mind, atoning for all the sins he feels guilty for.