Title: Zenryaku Ofukuro-sama | 前略おふくろ様
Genre: family drama
Episodes: 26 (1st season)
Broadcast: from 17 October, 1975 to 9 April, 1976
Cast: Kenichi Hagiwara, Kaori Momoi, Midori Kinouchi, Tatsuo Umemiya, Kaoru Yachigusa
Screenplay: Sou Kuramoto
Zenryaku Ofukuro-sama is written by famous Japanese screenwriter, Kuramoto Sou, and is a predecessor of Haikei, Chichiue-sama.
Thanks to saigo_x for the links.