>>1923
If you've got access to exhentai, and you should, you can use these tagstrings.
male:shotacon -male:yaoi female:femdom language:english male:prostate massage
That's probably what you want, but these will work, as well
male:pegging language:english male:shotacon
male:shotacon female:shemale language:english
male:shotacon female:futa language english
male:shotacon male:crossdressing -male:yaoi language:english
male:shotacon female:femdom language:english
And so on. I think you get the picture. On gelbooru, you can use:
shota pegging
strap-on shota
femdom shota
But they only really do single pics. Sometimes, you can follow the source back to pixiv, though, and the artist will have done similar stuff. Sometimes you can search for the artist in exhentai, and find that he's done an entire CG set on the one picture. There's tons of hentai out there, you just have to know how to use tags.