[ stick her hands in there and she may end up short a few digits! Aidou was a math whiz you know. But he stared at her with suspicion before he finally sighed. ]

I don't think you quite know what that word means. Tsundere is simply a person who refuses to admit they like someone when they do, usually to violent effect. I am merely stating that you're nothing but a fellow student whom I've been bribed asked to teach since someone can't seem to concentrate on her lessons!

[ he flashed her a hard look, completely serious now ]

Why don't you apply yourself more to school? You clearly aren't as dumb as you make yourself look!

[ well.... at least Minako had the blunt part of Aidou's personality right. That was a start! ]