im looking for a specific anime series that i cant seem to remember the title, just the characters faces and a couple of scenario. h0pe you can help me.

base on what i can remember, the girl keeps a pretense at school that she's nice and mild temper. she's popular, admired, and brilliant but she always fell as second to a guy at school. the guy ended up finding out about her "dual personality" and blackmailed her to expose the secret if she wont tutor him.

that is all i can remember though..