Chiyoko Agemaki

Mrs. Agemaki is a kind woman. She is the mother of Kei and his younger sister Kumiko. It has been revealed in Episode 7 that she can sense the presence of youkai even if they want to hide it. She saw straight through Zakuro's disguise (as she hid her ears). Despite that, she earnestly tells Zakuro that she will be grateful to her if she continued looking after her son.