Name: Kumada (熊田(クマダ))
Age: Unknown (Probably in her thirties)
Voiced by: Haruhi Terada
First introduced (manga): Chapter 098
First introduced (anime): Minami-ke Okawari Episode 12
Kumada is the nurse of the elementary school attended by Chiaki and her classmates. She enjoys teasing Chiaki and is desperate for a boyfriend, due to her relatively high age (being an unmarried female beyond a certain age in Japan carries stigma).
She attends the barbecue at the end of Tadaima and meets Touma's brothers.