[2] Yashiro originally sang jazz standards in hostess clubs, but made her debut as an enka singer in 1971, with the single "Ai wa Shindemo (愛は死んでも)",[4] under the label of Teichiku Records.

Seeing the single's lack of success, she appeared on the YTV's Zen Nihon Kayō Senshuken (全日本歌謡選手権) audition, winning it for 10 consecutive weeks.

[5] Since then, her songs like "Shinobigoi" (しのび恋), "Ai Hitosuji" (愛ひとすじ), "Onna no Yume" (おんなの夢), "Mō Ichidō Aitai" (もう一度逢いたい), "Onna Minatomachi" (おんな港町), and "Ai no Shūchakueki" (愛の終着駅), that dealt with women's emotions, also became great hits at the time.

She continued collaborating with Teichiku until 1981, before turning to Century Records, where she released singles like "Umineko" (海猫), "Nihonkai" (日本海), and "Koisegawa" (恋瀬川), until 1986.

On January 9, 2024, it was reported that she had died on December 30, 2023 after a bout with anti-MDA5 dermatomyositis and rapidly progressing interstitial lung disease in a hospital in Tokyo.