What an excellent and satisfying read. Bitter and dark and OMG! canon compliant! You wove this story perfectly into the timeline of the series post HBP, not an easy task as many writers are selectively borrowing only certain plotlines from Deathly Hallows, or ignoring it altogether, so I applaud your ingenuity at making it all work as one. I absolutely loved the characterizations. Yeah, Remus isn't always nice, mild mannered, and patient just as Severus is not simply a cold, callous bastard. There's a rich history there, to be sure. They both have their limits and if ever two characters could push each other over the line, it's these two.