True Tenchi Muyo!(1997)

Shin Tenchi Muyou! Ryououhki

A trilogy of canonical light novels exploring the lore that shapes the past, present, and future of the sprawling Tenchi Muyo universe. In the first novel, delve deep into the backstory of Ayeka and Sasami’s father, Emperor Azusa, while learning what happened immediately following the conclusion of the second OVA series. In the second novel, witness the mysterious past of Tenchi’s grandfather Yosho, and how he came to find himself on Earth in the aftermath of Ryoko’s attack on Jurai. And in the third and final novel, learn the origin of the super genius Washu and the previously untold life she led as a goddess over 20,000 years ago!

(Source: Seven Seas Entertainment)