The princess in question belongs to the Kasumiouji noble family, which, according to Yoruichi Shihouin, is just below the four great noble families in terms of status. Her circumstances are unique and a bit unusual, as her mother died while giving birth to her, and her father passed away due to illness shortly after. As a result, she has an attitude that's typical of a princess, expecting her demands to be met quickly and throwing tantrums when ignored. She also refers to herself in the royal we.
The princess lives next door to Ichigo and attends his school with two bodyguards, Kenryuu and Enryuu. While traveling, she is required to wear a veil-like hat that suppresses her spiritual pressure, which falls off frequently, to prevent others from sensing her presence. Unfortunately, there's an assassination plot against the princess by one of her clan leaders, Kumoi Gyoukaku, and Kenryuu and Enryuu have kept this information from her out of fear for her well-being.