- A daughter of the Rainsworth family, one of Four duke houses that organize Pandora. She has both brains and beauty and acts ladylike. However, she is shrewd and manipulative. She is always attended by Break. Because she has a contract with Eques (a Chain in the shape of a black unicorn), she doesn't get old.
Four duke houses Consists of the Vessalius, Nightray, Rainsworth and Barma families. Each family secretly holds a door to the Abyss.
Pandora An organization founded by the four duke houses for the purpose of researching the Abyss. Its aim is to take possession of the Intension of the Abyss.
Chain The general term for the beings that came into existence in the Abyss. Each Chain possesses unique power and exhibits its power upon getting a contractor.
