I really enjoy the voice which you give to Nooj in this story. His observations are as astute insightful and acerbic as one would expect.
The relationships you have built in this story are looked at through Nooj's eyes in an entirely practical and disapassionate manner which I find extremely effective and believable for the character you are building.
The lengthy discussion that Nooj has with himself over his various aches and pains, caused by his intensive injuries and machina body parts is horrifying. I can imagine just how disgusting and frightening it must be to have a body half-constructed of machina parts like Nooj.
I have, in other stories, extensively delved into what he must have felt and experienced after his near-death experience. In fact, in one AU version, I have him for all practical purposes, resurrected. I think his pain is what makes him as he is.