Ultra ManiacUltra Maniac.

Ultra Maniac is a Japanese romantic comedy manga series written by Wataru Yoshizumi. It features two eighth grade students named Ayu Tateishi, a tennis club member, and Nina Sakura, who is actually a trainee witch from the magical kingdom. A manga adaption began serialization in Shueisha's Ribon magazine from February 2001 until January 2004, published in five collected volumes.