Mishima was born on May 3, 1957. In June 1981, she was selected the Japan national team for 1981 AFC Championship. At this competition, on June 11, she debuted against Thailand. In September, she also played against Italy. However Japan was defeated this match by a score of 0–9. This is the biggest defeat in the history of Japan national team. She played 2 games for Japan in 1981.