Hisui is an Eastern priestess who existed since ancient times. She has a youthful appearance that has been kept for multiple decades. Hisui knows Ichima and is currently searching for her. Hisui excels in both warding and assassination techniques leading to be known as the "Warding Priestess" by the people of her village. Her techniques revolve around fan dancing. Hisui uses her fans as a sharp weapon.