Princess

Princess is the leader of Kokuboro, and their ultimate goal is to install her as the new land lord of Karasumori. However, because of her deteriorating health and impulsive attitude, Byaku keeps her restrained at nearly all times. Princess is as pampered as her name suggests, and often cannot think beyond her own needs and desires. She can be very childish, and only Byaku, her favorite and most devoted subordinate, can calm her down consistently.

(Source: Kekkaishi Wikia)