Gosenzo-sama Banbanzai!

Gosenzo-sama Banbanzai! (1989) is a animation, comedy, drama with 1 season created by Mamoru Oshii, rated 7.0/10.

The Yomota family is small and typical: father Kinekuni (42), mother Tamiko (38), and son Inumaru (17). One day, a beautiful girl appears at their front door, calling herself "Maroko Yomota," granddaughter of Inumaru who travels back in time with a time machine to visit her ancestors. Despite of Tamiko's strong objection, Kinekuni and Inumaru welcome her to stay with them, and the structure of a happy family has begun to collapse.