Forgot to save and wiki ate my comment on the first try :'(
I'm starting to see what you mean by saying you're connecting to the main KOTOS storyline soon. Seems fun.
Did Alex have a wife and a kid before, too? They seem to ring a bell, but I'm not sure if it's just deja vu. And of course, Aiden won't stay. That's just how our boi is (and we need to have a story, too, after all).
It's interesting how you're setting up (Teenyweeny) Brocktree as an antagonistic character, but in an entirely different way than (Flumberfluff) Brocktree. It's kinda sad and concerning realising that he's doing it all of his own accord (even if by someone else's orders) in this case.
And Agent Sky is unstable! Yay! That's thedude prison time for ya! And he thinks Aiden and the Janitor are their KOTOS counterparts! lol also I noticed some incorrect Olde Speech over there, what was that? hope it was intentional It's nice seeing all this stuff being brought up, though, because Aiden didn't seem to know most things going on around Militiregnum and his father and was probably ignoring what he did know so far. It'll be interesting to see how this changes the course of the story, especially since we know they won't end up being much help to Killian either way. But damn, Aiden thinking it was LARPing! :P I mean he might be partially correct, but still damn! :P
Overall, good chapter.