Me needs stories like Yuri Kappuru no Katahou ga Otoko ni nattara or Fluidum, please. I want the sex-change/gender-bender themes with feelings and depth. It's so scarce;;;;;

Seibetsu "Mona Lisa" no Kimi e.
Ore ga Watashi ni Naru made
Okaeri Alice (careful with this one, if you know anything about the author, then you know it could take a very dark turn at some point. It hasn't yet though)
Bura Girl

These are on my 'to read' list but I've heard good things about them:
Boku Girl
Kanojo ni Naru Hi and Kanojo ni Naru Hi Another

Thank you!! I'll check them all out!
I like dark themes so, I'm more than okay with that one lol.