Tenchi Muyo! (天地無用!, Tenchi Muyō!^?), is an anime, light novel, and manga series about a boy named Tenchi Masaki and the alien women that love him.

The original series, Tenchi Muyo! Ryo-Ohki, was a six episode OVA (Original Video Animation or Direct-to-Home Video) series; released in Japan in 1992–93. As its popularity grew, it spurred a seventh episode (also known as the Tenchi Special) and the standalone Mihoshi Special. In 1994-95, the second OVA series was created and released, featuring episodes 8–13. From 2003 to 2005, a third OVA series was released, with episodes 14–19, centering around the three goddesses introduced in the second OVA series. This is then followed by a special twentieth episode which centered around some of the remaining plot threads towards Tenchi's mother, as well as Noike, who was introduced in episode 15. The series can be somewhat confusing to newcomers because it has several continuities, although due to later creative changes many consider the original OVAs 'true' canon.