Tenshi Na Konamaiki [Cheeky Angel] [TV]

At the age of nine, Megumi is an aggressive always fighting boy. One day he saves a strange man from a gang of other children. In return, Megumi receives a magical book. After accidentally bleeding on the book, a genie named Pierrot appears and offers to grant him a wish. Megumi wishes to become a strong man’s man. Pierrot, a trickster inadvertently turns Megumi into a woman. Megumi, furious, throws the book into the riverbank. Believing the only way to reverse the spell is to retrieve the book, Megumi begins a 6 year long search but is told that she can find the book if she attends Furinkan High School.
At the school, she gains valuable friends that help her on her quest.