Miyoko appears as a young girl who dons cheerleader attire during a period when the main character, Tabuchi, grapples with depression and performance struggles. Her timely arrival coincides with the team organizing "Tabuchi day" to express appreciation, an event that initially fails to lift his spirits. Miyoko's dedicated cheerleading during challenging matches coincides with Tabuchi's eventual positive turnaround.

She is listed as a character in the anime entries for all three Ganbare!! Tabuchi-kun!! films within the franchise. Available information focuses solely on her role in this specific context.