Ruiko Kurahashi （倉橋ルイ子）was born in 1959 in Hokkaido as Shizuko Fujimoto（藤本.志津子） Her first single, "Glass no Yesterday"(Glass Yesterday) was released in April 1981 and it was the template for her brand of singing for the next several years. She specialized in slightly European-tinged light pop songs and ballads which distinguished herself from the aidoru of that time.
"Glass no Yesterday"was the first track on her debut album "Without Sugar". The above YouTube video is of the original song, but there is one more shorter version that is arranged as a jazz torch song which was the first one I'd heard all those years ago. (Unfortunately, that video has been taken down but here is another version.) The song was written by prolific lyricist Fumiko Okada（岡田冨美子）and composed by Kazuya Amikura（網倉一也）.