Who wants some more introductions?!
Mamedai Kitashirakawa (voiced by Keiji Fujiwara)
Tamako's father and the owner of the Tamaya mochi shop. A stubborn craftsman of the art of mochi-making. He gets into a quarrel everytime he meets Gohen.
Fuko Kitashirakawa (voiced by Tomomichi Nishimura)
Tamako's grandfather who's a bit aloof.
Gohen Ooji (voiced by Fumihiko Tachiki)
Mochizou's father and the owner of the Oojiya mochi shop. He has no other ideas beyond new mochi products. He gets into a quarrel everytime he meets Mamedai.
Michiko Ooji (voiced by Satsuki Yukino)
Mochizou's mother who manages the Oojiya mochi shop.
Images were taken from this Mantanweb
article. This article confirms that the show will take place at both the shopping district and the school depicting an adolescent story that shows how important the bonds between people are.