I believe you're looking for Girls Bravo :)
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Anime, anime, everythang anime, bag anime, watch anime.. And it goes on and on.
In anime, Crona is a boy. In Manga, Crona is a girl
We couldn't call it useless, but it may seem that there are more anime fans that are interested in bishounen anime or boys shounen anime.
Gurren lagan!
I'm Pretty sure the anime you are looking for is called School Rumble. I might be wrong, but it does have a bad boy who falls in love.