From the top of my head, some crossdressing/TG manga:
Gacha Gacha Secret
Guy gets the ability to turn into a girl by sneezing. Tits & general fanservice ahoy.
Guy gets into an accident where he loses his face and gets his face restored, except now he has the face of the girl he likes. Previous work of the author of Mx0. Fucking awesome.
Boku no Futatsu no Tsubasa
Main heroine is a dickgirl. Borderline hentai.
Mint na Bokura
Some shit about a guy going to the same school as his sister disguised as a girl.
Yubisaki Milk Tea