I'm not all that great at writing, and I don't have the time, barring breaks from high school. But I've had an idea floating around in my head, where a human(s) are displaced in FIM equestria (not anthro/humanized) while still looking like humans, but with horns and wings. They start out in the everfree, wondering how they got horns, and are confused as to why all the vicious looking animals are afraid of them. Eventually they get to ponyville and various shenanigans occur until the princesses show up and explain that they are alicorn males and that that male pony alicorns are impossible (I still haven't figured out how) but that other species are dragged out of their universe to reproduce (Celestia can't
explain why the magic does this) and that coronated alicorns cannot produce viable young without alicorn males (assume flurry heart does not exist) and that's as far as I have gotten with the idea. Good luck.

P.S. Could work with a T rating or an M rating.