The Law of Ueki: Ai Mori

 Ai Mori is the bespectacled best friend and classmate of Kosuke Ueki.  She is usually kind and protective and can be vocal about things things she doesn't like.  She tries to prevent Kosuke from losing all his talents and will even put herself in danger to protect him.  In the beginning she had no powers, but eventually gets the ability to make someone fall in love with glasses if she can get them to perform a cutesy posse.  She relies on her cunning to defeat her opponents.