Kayoko Saga

Current mistress of the Saga family, mother of four, Hayate, two more unnamed sons and Komomo, she was born in a house with a history as long as Saga's and strongly related to production and training of anbus, the Karasuki kingdom's elite forces and specialized to work in the shadows, intelligence operations and secret missions, something similar to ninjas.

(Source: Seirei Gensouki Wiki)