|Japanese Name||板野 （いたの）|
|Debut||Episode 05 - Their Day Off|
Tomoyo's Grandmother was a former member of AKB0048. On Akibastar, it is possible that she was known as Tomomi Itano the 8th (板野 友美 （いたの ともみ）), also known as Tomochin (ともちん). She is the mother of Tomoyo's mother and grandmother Tomomi Itano and Tomoka Itano.
She has curly, greying blonde hair that is put up into a bun. She has a diamond-shaped lining on her hair, indicating that she had graduated. Like all members of AKB0048, she had a heart-shaped lining on her hair and eyes.