You already know how I feel about this fic, but I'll say it again publicly.
I recall the day you first told me about this, and the days after that where it wouldn't leave you alone. I felt immediately drawn to this idea and couldn't wait to see what you did with it. And it didn't disappoint. It was exactly as I was picturing, too.
I love a mellow Snape, a rescuing Draco and a grounding presence like Blaise. Their dynamic works so well in all the various combinations, but together, they do feel complete. The rich tapestry that you paint this against is so visceral, I can almost feel the grit underneath my fingernails, and the present tense makes it feel all the more immediate and engaging.
If this is what's to come with the evolution of your fics, I'm pulling up a seat.