No name has ever been revealed about Magic sempai. All that we know is that she is a very clumsy and air headed magician who is very self centered and very prideful. She has a tremendous amount of stage fright and tends to mess up most of her tricks in front of others. She does has a cheery exterior and and a strong passion for magic!
She sometimes gets herself in awkward situations and positions and Assistant-kun always has the butt end of the joke.