Girls are now gaining, please wait warmly.

Here's a great story involving Ran and Yukari:

https://www.deviantart.com/krabopolis/art/Touhou-Buttery-Punishment-634333805

Largekoishifan has written a lot of Touhou stories.
https://www.deviantart.com/watch/largekoishifan/deviations

I still consider DrBlackJack's Fullness of Time one of the best 2hu fics, extremely good Sakuya and Meiling content