I believe that the Otherkin body ticks a little differently on the whole, even when there is no genetic trace. I think that harbouring a non-human soul will have some effect on the body in the same way that ones’ state of mind affects the body too. For instance, the reason why stress makes people sick, and why energy healing such as reiki works, is because of the effect of non-physical occurrences on the physical body.
I used to think that everyone was really Otherkin underneath, it was just that most people hadn’t seen it. I still think that to some extent. I am constantly boggled by the number of times I meet otherkin IRL. I am fairly open about my ‘kin-ness among my friends, and the most common reaction I get is not “You’re crazy”. It’s “Oh. I’m one of those too!” If this is a typical sample, then there are a heck of a lot of otherkin on Earth. It makes sense. If the population is growing, and we are reincarnating, there is an increasig need for more and more souls. They have to come from somewhere; it makes sense that they come from people who are not human, maybe even not from Earth. I still think though, that there are people who are human through and through.
I also believe that humans in general are overlooking their potential, and that Otherkin represents just one way out of many to reach that potential.
So am I human? Physically, I assume so. My parents are human, as are their parents. There may be some trace of “fae” ancestry from long ago, from back in the days when fae walked the earth and mingled with humans. It would explain some of the odd physical things about me. But on the whole I fall within human “norms”.
Even otherkin who are kin-by-reincarnation seem to show odd traits; there are two schools of thought here. Either as already suggested, the presence of a non-human soul in the body will cause alteration of the body. Or else that the non-human soul chooses to reincarnate in a body that is “compatible”, and that maybe the most compatible bodies are ones that already carry a little of the old Fae (or whatever) blood.
Yet I do not consider myself to be human. I cannot relate to them. I am still an elf. I am not was. My body is not me. It is not us. It is merely the shell we wear at this time. It is the house that we live in. There are a few others sharing the body who claim to be human in soul, others who claim elven or angelic or sidhe.
I’m not one of those human-hating otherkin, and I don’t go in for human-bashing (except perhaps occasionally in jest). I don’t hate humans, but I do feel sad for them sometimes. So many of them are missing so much that is wonderful.