Responses
It sounds like it might be this:
http://www.mangago.me/read-manga/the_day_of_revolution/
Its not that one I've already found its called click (๑•ㅂ•)و✧
It's a genderbender manga where the guy was tough and a good fighter but then he starts to feel ill and when he wakes up the next morning his (thing) is gone and he is now a girl so then he moves away and everyone thinks his dead plzzz help!!!!