Due to being very busy in work Yuriko is rarely at home, which leads Kyoko to doing all the parenting for her younger brother.
She is very gentle and caring mother.
She is very lazy is the kitchen, her "speciality" is making curry, perhaps boiling in the bag kind, mentioned by Kyouko.
Hori Yuriko usually comes home when her daughter comes back from buying groceries, but one day she came homer and first met Miyamura.
Her eldest daughter
Her youngest son
Her husband whom she first met in high school. She had Kyouko at 18.
When she is first introduced in the manga, she seems very interested about him when Kyouko and Souta were talking about him.