Cheeky Angel

Megumi-chan has a hidden past-she was once a boy. When she was nine, she met someone she believed was a magic user, who gave her a mysterious book. If blood is applied to it, a genie emerges to grant one wish. Megumi wished to "be a man in a man's body," but the genie has a cruel trick: he grants wishes in reverse. Instead of becoming an adult man, she was transformed into a girl. Years later, Megumi is now in high school, where she instantly defeats the school bully-who, predictably, falls for her. Now, she’s searching for that book again, hoping to undo the spell and reclaim her original form.