Matsuura Chiyako (¾¾±ºÀéÌï»Ò) was Yuu's mother, who worked at a cosmetics maker. She was a good cook.
She is now married to Koishikawa Jin.
In the anime, Chiyako's voice is done by Emori Hiroko (¹¾¿¹¹À»Ò).
(c)Yoshizumi Wataru/Shuueisha, Toei Douga