She competed in all artistic gymnastics events at the 1960 and 1964 Olympics and won a team bronze medal in 1964.

Her best individual achievements were fourth places on the vault and uneven bars in 1964.

[1] Born Toshiko Shirasu, she changed her last name after marrying Nobuyuki Aihara, a fellow Olympic gymnast.

Their son Yutaka Aihara won a bronze medal in gymnastics at the 1992 Olympics.

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