I love this!
While the Amon/Koh connection has (unfortunately in my opinion) been proven false, the interaction between WST/Koh in this is simply delightful! It reminds me much of a little one-shot fic I did a few years back with the two. Where was that... Uhh yes! fav.me/66382865
I simply wish I had your ability to illustrate!
I know it's been years since you posted this, and I am late to the party, but keep up the good work! lol