Grandma Fumi is Mitsuko's grandmother. Living in 1920s Japan amidst strong anti-Western sentiment, she intervened in 1921 to save an American doll named Emily from organized doll burnings targeting Western cultural symbols. Her actions preserved Emily despite the surrounding societal hostility.

The doll remained concealed for decades, surviving through the war years. It was rediscovered by her granddaughter Mitsuko, connecting her to Grandma Fumi's past act of cultural preservation. This discovery shaped Mitsuko's understanding of tolerance. Mitsuko later shared Emily's story during a school show-and-tell to support a bullied transfer student named Yu-Lian. Grandma Fumi's background defines her as someone who defied cultural erasure to safeguard a symbol of international connection.