The story I'm looking for was about some kind of science club, a delinquent/gyaru/scary girl joined, the members were all scared of her. Then there was some kind of bug involved in there with the MC (a girl with classes, iirc?) getting rid of it, making the delinquent/gyaru/girl admire her. (?)
Yeah, it's all very fuzzy in my mind, but I'm been wanting to re-read it for a while, now.
