Sumire Okuyama

Sumire is a former child prodigy actor who seems too mature to be a junior high school student. She commutes to school from her parents' home in Yamagata Prefecture, but she doesn't mind the difficulties she has endured and she is always smiling. She usually has a middle school-age spirit, but when she is not careful, she has a tendency to speak in a dialect.

(Source: Idoly Pride Wiki)