What is kyu sakamoto wife?

Kyu Sakamoto's wife was Yukiko Kashiwagi. They got married in 1960, and had two children together. Yukiko was a former actress, and stopped working after getting married to Kyu. She was said to be a very supportive and devoted wife to Kyu. After Kyu's tragic death in 1985, Yukiko remained out of the public eye and did not give any interviews. She passed away in 2015 at the age of 81.