What would have happened in Aloft, if Akari had died?
I think there would have been so much hell to pay. As the story is now, Hirato skirts the law pretty deftly to get his revenge. If Akari had died, there would have been nothing stopping Hirato from finding Azana and wringing his neck. And I’m not even exaggerating.
Aloft!Hirato isn’t like canon!Hirato in that he doesn’t have to fight man-eating monsters, so you don’t see him in true blood knight form in the narrative. But all of those tendencies are there, just simmering under the surface. You see it every now and then: when he gets angry enough at Akari to push him against the wall of his office, when he gets coldly murderous after Akari asks him to just let things go (multiple times).
One of the scenes that happens off camera is Hirato watching the video of the shooting. I just didn’t have time to put it into the story. But in my head!canon, he went down to Chicago PD to watch the video just like Akari did. And just like with Akari, Karokou showed him the tape. Hirato watched it, very calmly took a few breaths, and then threw his chair halfway across the room. Karokou is a hardened detective, so he’s seen plenty of people lose it in interrogation rooms. But seeing Hirato - someone who is famously stoic - absolutely lose his shit like that was really alarming. Karokou knew then that Hirato was furious because Akari had been left for dead, not because his client was being especially dumb. Karokou is exceedingly perceptive like that. And discreet. He assured Hirato he wouldn’t say anything about what had transpired. Hirato offered to pay for the chair, but the detective only laughed and said they go through a lot of cheap plastic chairs at Chicago PD.
So what would happen if Akari died? I think we’d see a side of Hirato that only varuga get to see. Canon!Akari is inexplicably turned on by the darker side of his bedmate, but Aloft!Akari would be upset and he would feel guilty. Stupid of him, really. He fails to recognize that he didn’t make Hirato this way; Hirato’s always been a little dangerous. Again, this is something canon!Akari knows, so let’s be glad Aloft!Akari is dead in this AU because he wouldn’t want to see what Hirato becomes. In the end, I think Hirato would execute Azana, and he wouldn’t have any regrets when he’s arrested.
Ryoushi and Yogi would work with local judges to plea bargain and keep Hirato’s sentence as short as possible, but he would definitely do some time. He’s prepared to do time as it is; if he lost Akari, he wouldn’t care. I think it would take a lot of hard work from everyone around him to make him care about what’s going to happen to him post-prison. In this AU, I could see him living with Tsukitachi and Iva once he’s out. Maybe he spends a lot of time playing with their little son (who Iva would name ‘Akari’). Hirato would eventually come out of his depression, because he’s really resilient even if he can get surly sometimes. And he’d make a wonderful godfather to little Akari (who has none of the late Assistant DA’s fractious personality, thank God). Perhaps he’d get a job as a legal consultant for Legal Aid or something equally humanitarian in his former lover’s honor. I do think he’d never stop feeling a little guilty for Akari’s death, though, and that would prevent him from really pursuing happiness. It’d be a sad ending.