Hello Kathy,
I hope this message reaches you. I am the daughter of Fuku Shoji. Sakai's oldest sister. My mom also married an American serviceman. She came to the States in 1959. Her father disowned her for marrying an American soldier. With that being said, she lost all contact with her family shortly after she came to the States.
I have been looking for her family for years. Praying this reaches you.