Yukimura Sanada's kagemusha (or shadow)
She has blue hair and dresses like Yukimura (she is his shadow or kamemusha). She is very buxom and has lipstick
She is a kind person and is very devoted to Yukimura
She belongs to the Sanada Jyuuyushi and she is also the female double of Yukimura.
Her main responsibility at the beginning is to remain in Kudoyama and take care of Sakuya
In the anime, it is shown that she is in love with her master.