Magical Circle Guru Guru

is a manga written and illustrated by Hiroyuki Etō. It was serialized in Monthly Shōnen Gangan from 1992 to 2003. An anime adaption aired on October 13, 1994.

A new series based on the manga to be animated by Production I.G has been greenlit for July 2017.

Other Sources

 * Guru Guru @ Nippon Animation
 * Guru Guru @ Nippon Animation