Nodokan: of, or pertaining to, Nodoka
Kata likes Nodoka, see?
And he acts like her, being full of references and stuff like a librarian should be
Chizuru is more like Mutsumi than any other girl in the series
She is also amazingly well endowed
Chisame is pretty much modelled on Naru, and has her more annoying idol side too, which is a straight copy of the devil herself
I always thought that in looks at least, the closest to Kanako in Negima was Setsuna. That may be just me though