Responses
the windspell and getting to know grace
"Murmur" isn't exactly dark dark but it does have some more toxic themes initially that develop into something fluffier so maybe it could interest you or maybe not. It's one of my faves if not my fav honestly.
I'm going to start this other one called "moonlight garden" which is supposedly good too but I couldn't say for sure cause I haven't read it myself yet.
as someone whose only ever read yaoi/bl whats some good yuri? preferably smth darker rather than fluffy (like the one i read a bit of was "kill me now"