Maybe it was just a regular costume hazmat suit, one that doesn't have any functional parts, which then became a real working one once brought through his one portal thing, like all his guns?
I knew it! From how he reacted to the phone call last chapter, I had a gut feeling that he's actually wanting to help keep Iruma safe, even if he's simply following protocols.
Damn, I think I started to read this when the first season ended, or at least around that time. Also I'm still surprised that it's been going on for that long.
Don't forget about the teacher running away from her as well. He truly doesn't want to try and catch a case, especially in a school where the teachers are all pretty powerful demons.
Oh, I definitely was more than just on to something, I full on predicted it years before we found it out! Not only was that a memory of his wife but that she was truly a human in disguise!
Just started to reread the series a few days ago and completely forgotten that I even had that theory of...
Maybe he's wanting them to not kill anyone because he doesn't want Char to lose her innocence from seeing the aftermath of a war. You know, with all the dead bodies and everything?
My theory is that the mother was still alive, possibly having taken the place of the older brother due to how they would be the one driving her instead after they got their license.