Sawa is from the blue-blooded clan with special powers. She has the best mental strength, physical strength, and skills among the executioners.

While Sawa is the owner of Tsuyukusa Bookshop during the day, she lives behind the scenes as an executioner of "Nue." She avoids being involved with others and is unfriendly. Sawa is strict with herself, as well as with others.

(Source: Official Site, translated)