There is, as far as I know not a single case of a true human hermaphrodite.
None that can both fertilize and be fertilized.
But this is a fantasy manga, so the truth is whatever gets the author hard.
Not sure about loli, but I've just checked the tags on exhentai for this and would never read it based on those.
mmf is literally gay
And blowjob face looks just plain retarded