Well, I looking for shoujo-ai, yuri mangas, where one of the girls is looks like a man, live as a man, crossdressing!

Incest♥Necrophilia♥Selfcest

Flower Flower ?

Himitsu no Hanazono (FUJII Mihona)

THANK YOU SO MUCH!.

Incest♥Necrophilia♥Selfcest

Claudine...!
"Her First Love" from Girls' Aesthetics

Renai Idenshi XX I guess.

[img]http://i32.photobucket.com/albums/d25/khmershinobi/b750d351697e8dd4b2600bce2a15e1e9-2-2.jpg[/img]

__ I'll have what she's having... please~♥

Thank you, are there more? 😀

Incest♥Necrophilia♥Selfcest

Himitsu no Hanazono (FUJII Mihona)
Hatshepsut I don't know if this counts exactly, but it's pretty close. It's about the female pharoah, Hatshepsut... she's not exactly crossdressing, but she is filling a man's role
Atashi no Onna ni Te o Dasu na One of the girls dresses pretty androgynously
Indigo Blue The woman here is also pretty androgynous

Haven't read it but Anata to Scandal might also count...

If you're also into BL there's a yuri side couple in ZE that fits pretty well.

That's all I can think of...