Ayeka Masaki Jurai is one of the main characters of the Tenchi Muyo! metaseries. Ayeka is the beautiful princess of the planet Jurai who has fallen in love with the main title character, Tenchi Masaki. Ayeka is portrayed in being well mannered, traditional, and aristocratic, but can also be snobbish (her proper accent is evidence of her aristocratic upbringing). She can also be very fierce when she feels that anyone or anything she cares for is in danger, such as Tenchi or her younger sister Sasami of whom she is very protective of.
Ayeka is a love rival of Ryoko Hakubi for Tenchi's affections. Often the conflict between the two comes out of their decidedly different personalities and backgrounds, with Ryoko being more blunt, open and sexual in her attempts to gain Tenchi's love. The level of the rivalry can vary between being equatable to a pair of bickering siblings to an all-out feud. Ryoko's teasing and efforts often bring out some of Ayeka's worse aspects. However, there are times when Ayeka puts aside her rivalry such as when Tenchi is in danger.