I'm kinda surprised Oka is so talkative lol.
I wonder if Nurari really even cared what was happening. I'm kind of remembering Oka and how he basically let his mech suit get trashed along with his smaller modified cycle. If all Oka was planning to do was bash the thing's brain in with his bare hand then I don't know why he went through the trouble lol.
At the end of the chapter it says "next chapter: Nurari gets even more...?!" I'm kinda thinking that Nurarihyon was giving Oka a chance to show his moves. If I was pretty much immortal like Nurari seems to be, I would consider fighting to be pretty boring. I might do my typical psi-blast thing, but if the guy lived, I would probably just stand there and let my opponent have the next move to see if he did anything interesting.
We've seen Nurari regenerate from much more devastating attacks than this, so I think the party's just getting started.