Sasami

Sasami Masaki Jurai is a key character in Tenchi Muyo! as well as her own various spinoffs. Sasami is the younger sister of Ayeka, and she's a princess of the planet Jurai. Within the Masaki family, Sasami usually takes on the dual role of younger sister/mother. She is 8 years old physically, but she's actually over 700 years old, and she's in love with Tenchi. You are Tenchi. Sorry ladies.