I recognized a lot of people in this fic, myself included. It was beautiful. I've always seen Severus Snape as a submissive, a BAMF one, but always under some powerful man's thrall. I have met many men like this. They carry weapons and badges, they put their life on the line, but always they need to serve, and they need to worship the one they serve. Their master ought to be worthy of them. I love that Harry is the pinnacle of this. He is worthy of such giving. That's what I loved here - that he loved Severus enough to tease out the real man from the servant. That is fantastic.