YAY! -- part 2!
The pacing was really great as well. I really like the way you led us right into the narrative, with asides revealing why Harry has taken the DADA position and the focus on moving into the mystery of the story. You managed the reveal of Harry's marital arrangements well -- great to have it came out during Harry's increasingly intimate evenings with Severus rather than earlier.
I especially enjoyed the very clear shift in Severus-es (hee, if that makes sense) when Harry and Severus first had one intimate night, then woke up the next morning with at least a good deal of Severus's memories coming back to him. And the sex then, as they shift back to different sorts of roles with the age-difference more clear (er, even though Harry is a bit older at that stage -- still, Severus has the advantage of both he and Harry remembering him as older), with Harry playing on that dynamic with his "Yes professor" response when he woke up, very very hot.
Great work, really enjoyable -- than you so much for this lovely fic!