What was this anime called?

the anime is a long one, about 50 or so episodes. It was about a guy who found a magic genie, and think it would work, wished to be a man of a man, but instead was done in opposite, making him a her. this also rewrote everyone's memory of him being a guy, instead making them remember him as a her. several years later, everyone begins to recognize him(her) as the most beautiful girl at the school. attracting the comedy of the show. what was this show? any suggestions would be helpful, ill look at all the titles presented.