Yûko Nogami

A single mother from the country raising a 6th grade boy comes to Tokyo, leaves the boy to live with his uncle's family, runs a struggling grocery store, and works a local inn. The boy befriends a girl, the daughter of the innkeeper...

Ultra-perky model likes single freedom but feels ryosai kenbo ("good wife, wise mother") pressure, exemplified by her bored-to-tears sister.