I need help on finding this shoujo manga?

Well I remember this manga Is shoujo and Historical ...Is about a girl who is transported to another time and the main guy is a ninja or something like that not a knight ok nor a warrior maybe some kind of ninja warrior but defnetly a ninja...I remember that she was wearing her school uniform when she was transported and like then there were other people looking for her because they believe that she us some kind of "Choosen one" I quite can't remember she also had short her and the guy was protecting her...please help!!!!!