Super Jump
A spin-off story for Izuna Hazuki the itako-girl, "Reibaishi Izuna: The Spiritual Medium", was serialized in "Oh Super Jump" and later in "Super Jump" from July 2007 to October 2011. A sequel to the spin-off titled "Reibaishi Izuna: Ascension" started in November 2011 and finished in June 2016. In May 2014, a "Jigoku Sensei Nūbē" direct sequel has started with the premise of ten years having passed, with Kyoko becoming a teacher at the Dōmori Elementary and Nūbē returning to the school from Kyushu. The manga finished in December 2018. A sequel titled "Jigoku Sensei Nūbē S" started in "Saikyō Jump" in August 2018.