the whole 'female audience' thing is very likely to be utter fucking bullshit.
In Japan it is.
If you go to Japan and notice a bunch of old ladies reading comics, chances are you seeing the Yaoi section. (I went holy shit and started l started laughing when I realized it was true what they said when I walked through a store in Akihabara once)
Truth be told, not all Yaoi is pornographic. I'd wager the majority of it isn't in Japan. They have a weird sense of things. Like maid cafes and host clubs, they get off on subtle things like "dead Japanese parent syndrome" (where the plot of the story is the kids parents have died releasing them from their obligations... strange how so many Anime and Manga's have that plot line)
Anyways, my point is, that the stuff English speakers google is probably pornographic because that is what they expect from Japan while in reality Japan isn't all about sex.