Ai Tennouji - 天王寺曖
(てんのうじあい, Princess Ai)

About
A strange girl with a weak constitution who claims to have run away from home to experience the outside world. Actually happens to be a ninja princess who is being hunted by the Amalaraiks. Ai wields the heart blade Purity, a katana which can read the heart of everyone who holds it and talk to her
