Tenchi Muyou! RyououkiNo Need for Tenchi! - Okuda, Hitoshi

A spin-off of Tenchi OVA 1 and 2, Tenchi Muyou! Ryououki follows the usual hijinx of the Tenchi gang, as well as throwing several new characters in the mix including a Ryoyko's clone, and Washu's other lab assistant.

(Source: ANN)

Tenchi Muyou! Ryououki was published in English as No Need for Tenchi! by VIZ Media from March 28, 1997 to May 6, 2002, with a second printing from November 2004 to February 2008. It has additionally been partially published in German, Italian, French and Indonesian.