Umajima Sachiko is a Japanese musician and superstar, most famous for her 1972 hit "Sexy Revenge". She met Dhiar in 1971, and he helped her to compose the song that he then helped her to pitch to her management that she wanted to perform. After some persuasion, it was done and she became a household name overnight. Dhiar occasionally popped back in to make sure she was doing well, and the two maintain correspondence and regular meetings. After this, Sachiko quickly renews her star status and begins to release solo work again.