Moriarty's body was reassembled according to Watson's wish.
Moriarty's fur was dull, and several of his wounds had yet to heal when he was reassembled. The Heaven-devouring Rat King did not have an extraordinary ability to heal. He could recover no matter what kind of hurt he received, but there was a limit, and Watson's attacks had definitely extended beyond his boundaries.
Furthermore, his mental afflictions were more severe than his physical disabilities.
"Kill me, Watson! I have already given the goldbiter rats the go-ahead. Those cities must have been demolished by now. You must bear the sins of those who died for the rest of your life. I condemn you to have nightmares every night and to die horribly. Do you want me to show you the deplorable condition of those cities and villages right now?"
Moriarty yelled, his eyes red.