Culturally, there is no concept of dual custody or visitation. Once a couple gets divorced, the children are typically assigned to one parent and never again have contact with the other parent. After divorcing his then-pregnant wife of four years in 1982, former Prime Minister Junichiro Koizumi retained custody of his two eldest sons, Kotaro and Shinjiro. His ex-wife Kayoko Miyamoto took custody of their unborn son, Yoshinaga Miyamoto. Since the divorce Miyamoto has not seen her two eldest sons, and Koizumi has never met his youngest son, Yoshinaga.