Yukiko Kashiwagi (柏木 由紀子, Kashiwagi Yukiko, born December 24, 1947) is a Japanese actress and was the wife of Japanese singer Kyu Sakamoto from 1971 until his death in the August 1985 Japan Air Lines Flight 123 crash.[1] In the 1970s, Kashiwagi retired from her career as an actress and instead presented a series of welfare performances with her husband in children's homes and nursing homes, and on Japanese television.