Tenchi Muyo! Ryo-Ohki (天地無用! 魎皇鬼, Tenchi Muyō! Ryōōki), known as simply Tenchi Muyo! in North America, is a collection of Japanese OVAs created by Masaki Kajishima and animated by AIC. Initially released in 1992, it marked the beginning of the Tenchi Muyo! franchise, composed of several manga, OVAs, TV series, and other related media. The first two OVA series were later licensed and distributed in North America by Pioneer Entertainment, with Funimation taking over the rights for the third series, and later taking over the rights for the first two OVAs. In 2020, Crunchyroll acquired worldwide streaming rights (outside Asia) for the fourth and fifth seasons of the OVA.