Board Thread:Questions and Answers/@comment-27836345-20160221055228/@comment-26269901-20160221121327

Well, she must be a human, I don't recall in all this time anyone in the series trying to claim otherwise. Though the thing is, all the other humans that got some powers are miles behind her level, and even Orihime herself has plenty of room to grow. I don't know if the answer really lies in her parents, who were according to her brother horrible people, two losers with nothing special about them, unless those were not her real parents or there were some other things we weren't told about. I gather the more we find out about the past of Soul Society and other worlds, the idea on what is Orihime will be clearer.

She looks kinda like Ichigo, with the same special hair color, there might be something in that.