Kämpfer

Kämpfer (2009) is a animation, action & adventure, comedy with 1 season, rated 6.7/10.

Natsuru is selected to be a Kampfer, a mystical fighter who has to fight other Kampfers. The catch is that all Kampfers are female, and Natsuru is male... at least he was! Worse, Natusru's best friend turns out to have a crush on his new body.