|Full Name:||Saya Monou|
|Family:|| Kyougo Monou † (husband)|
Kotori Monou † (daughter)
Fuuma Monou (son)
Saya Monou (桃生 紗鵺 Monou Saya) is Kotori and Fūma's mother.
When Fuma and Kotori were children, she died giving birth to the first Sacred Sword, which burst forth from her body. This sword is intended to be wielded by Kamui; instead, it is stolen by Nataku and taken by Fūma. It is later revealed that Saya married Kyōgo only to be at the Togakushi Shrine to take the place of her true love, Tōru Shirō, as the vessel of the Sacred Sword. Kyōgo knows that Saya never loved him romantically, but, regardless, continues to love her.