Going with probably not AI. The pin thing is just him using a mirror. The artist does change things a little over the chapters. They seem to add a bow on his back in chapter 2 to represent how much power he's absorbed? In chapter 3 they added a choker. I'd need a few more chapters to really say that's AI though. Most of this is very consistent. Even the hair which mostly sways as he moves/reacts.
Seems like this is their first long form work, so they could just be learning as they go. However, if the character's outfit keeps have these minor changes, then I'm gonna get suspicious.
