Tenjou Tenge Ep 1 - Female AP

Episode 1 Sanctuary
The leader of the Yawaraken is a 3rd year student by the name of Natsume Maya. She has immense power and skill, and is able to change the shape of her body at will. To restrain her power, she is typically in the form of a chibi/little shoujo. When a serious fight comes around though, Maya turns into her adult form and her power multiplies greatly.