Yuzuha is a demon from the dimension of darkness. Though she is childlike and mischievous in nature, she can be absolutely evil too. Her hatred towards Yosho stems from a palace attack, which happened long ago when Yosho was just a boy.

After a nightmare of that fateful night during the Startica festival on Jurai, she somehow locates Yosho and the rest of us in one of her many monitors. Disgusted by our happiness, she decides to hatch a clever scheme by using some of her hair with Tenchi's to create the ultimate tool to destroy that happiness. . . Mayuka.