[KuroiBara]

LOVE EXPOSURE!!!!
I think. Sounds very similar! I love that film. He becomes part of a porn group as the religious group made him do it to get his girl back?
He dresses up as a woman most of the time because he's too shy to talk to her (if we are on about the same film)

EDIT: with the porn thing he becomes like the god of "knicker-snapping" and is idolised by sinners...
in the beginning it was just some fetish or something? great film!