Thanks for the update! This new sci-fi arc is so wild!
I really wouldn't accept nanomachines from someone I just met lol. They're capable of controlling a person and who knows if Nias has an ulterior motive. They might even malfunction considering Allen isn't a normal human. The nanomachines might not be compatible with magic.
I'd also be concerned with that part about them helping you learn techniques and manipulate your vision... Even if they don't control you, are they now just a spy program for some third party?
In today's terms, they're covert always-on smart-glasses recording everything you see and hear, made by a company you've never heard of.
If they can end up learning magic from you, it could also be a way to get magic into the sci-fi world. Or learn trade secrets, or learn a foreign language via a spy, or do insider trading...
The weirdest part is that those screens didn't show any ads.