Tomoza's elder Sister and Namisa's Childhoodfiend. Her dreadfull power of Observation leaves nothing unnoticed.
She is the second person to notice Tsukiko was a girl, though decided not to out her. She instead wants Tsukiko to marry her brother, Tomoza, so that she can be another controlling factor of the Kamiyama family- taking control of Tomoza and steering him in the right direction. She uses schemes now to get the two of them together, planning on having them starting a better realtionship.