Sakuya Kumashiro
Sakuya Kumashiro is a girl Tenchi meets shortly after moving to Tokyo. She is a normal high school student who attends the same school as Tenchi.
Circumstances beyond her control often put her and Tenchi in strange situations.
As the only relatively normal girl in Tenchi’s life, he soon falls for her, pulling her into the crazy life of the Tenchi girls.
Yugi holds an interest in Sakuya, and often manipulates situations forcing Sakuya into close contact situations with Tenchi.
Later in the series, Sakuya realizes that she can not remember her past before she met Tenchi. Together, they choose to make new memories instead.
Sakuya is actually Yugi’s shadow, although she does not know it. Her purpose on Earth was to distract Tenchi and break up the girls surrounding him. She doesn’t remember the time before she met Tenchi, because she was created not long before that.
Yugi destroys Sakuya near the end of the series.
Sakuya makes one last appearance in a fantasy world created by Yugi to stop Tenchi. Once Tenchi tells Sakuya that he loves her, Sakuya tells Tenchi how happy she is, but that they can’t stay together. She then intentionally ends the fantasy and her own existence.