Ichinose Sakiko

She is a wife and Azusa's mother. She tries to treat Ryuusuke normally, but she seems to be physiologically incapable of it, and sometimes this comes out in her attitude.

She struggles to speak up against her husband and daughter. She is a full-time housewife, and although her figure has begun to deteriorate a bit recently, she has a good enough body.

As a matter of fact, she loves handsome younger men, and the hypnotic sound waves have changed her perception of Ryuusuke as a handsome man, and she is hooked on sex with him.