Haruka Mishima IS Haruka Shitow.
Ok I suppose I should explain why :rolleyes:
1. At a point in the series Haruka tells that her mother remarried, and her last name changed then
2. Mishima Reika as Ayato's Ishitori, and and she put it "Orin must desire Ishitori", in other words, Ishitori takes on the shape of the one Orin loves. WIth Quon, shape of her Ishitori was Ayato. With Ayato, it was Haruka of his yough, the girl he loved, but could not remeber.
There were other occasions which pointed to the same conclusion, but I don't rember them anymore. One thing you should do is check if your rahxephon is from AJ. If it is, you missed a LOT of important information, as their translation was seriously lacking.