I didn't think I would like Cruz exerting physical power, but it was actually quite satisfying seeming him power up a bit in this chapter. I guess I like desperation mode power ups a bit too much
. Well, I'll be happy just as long as he doesn't become the centerpiece of fighting in the future. This series already has Blade and a number of other characters for that.
Anyway, Arclight mentions on page two that he's not going to cause any damage to Cruz's brain, which is feasible given his abilities. So at worst Cruz just has a hole in his head now, and we've seen people up and at 'em in this series with far worse injuries than that. I don't think we can conclude that he just regenerated on his own power.
p.s. this chapter is kind of infuriating by revealing what we already knew was probably the case (that Cruz has a fragment) but not what we've been really wondering about
: just what that fragment is. I wonder if next chapter will be a Blade/Eve/Disc powered infodump, or a return to Seto/Solva of the shoujo butai. This series is not exactly great at handling multiple plot threads, so who knows!.