Hisako's brother lives in Shibukawa Gunma, however he does not speak English, and family history is difficult to extract. His name is Kihachiro Okimura, he has 3 sons, Kenji, Shoji and Hiroshimi. Hisako and Kihachiro's parents names were Kiyomatau d.1951 and Massae Okimura d.1995. We believe Kiyomatau's parent's names were Chozaburo Okimura and Kie Hanoaka.