tip: "sherlock (tv)" m/m NOT "sherlock holmes/john watson"
The fact that this crossover exists--let alone that you've pulled it off with such style--makes me almost indecently happy. The backstory and world building that you hint at have me utterly fascinated and I am very, very glad that I decided to read this \o/
Thanks so much! It's so flattering (and an enormous kick to me) that you liked the worldbuilding. :D