Koyama Kazue

One of the residents of Mekagemura village. Like others, she also carries out the traditional customs of the village. She has a preference for young virgin boys and strikes fear into all the boys of the village because of her aggressive and harsh training.

She likes to push her duties onto others, especially Hogami, if training involves boys who are not virgins or boys she does not find attractive. She is particularly interested in Wataru for his virgin status and beautiful looks.

She has secrets that no one in the village knows and is someone that village superstitions warn against.