This is a genderbender manga where the male protagonist crossdresses in a cafe to seduce cute boys..? But then when he is about to fuck the boy, she was revealed to be a girl, it's also a oneshot.

"Bravery we all have it"

If you haven't found it already, it might be this oneshot Yugamira, It's not hentai though.

I'm in idol hell T.T