Gosenzo-sama Banbanzai!

The Yomota household consists of father Kinekuni, mother Tamiko, and their son Inumaru, whose ordinary family life is interrupted by a girl at the door. Calling herself Maroko, she claims to be Inumaru's granddaughter and says she has traveled back through time to visit her ancestors.

Her arrival unsettles the household and divides its members over whether to believe her. As family disagreements become entangled with the strange implications of her story, the visit turns into a test of what binds these people together and who can claim a place within the home they thought they understood.