一いっ親しん等とういっしんとうじ字FuriganaMeanings1nounfirst degree of kinshipLegal term for the closest family relationship: parent-child or spouse. Used in inheritance, family registration, and civil code contexts.民みん法ぽうでは、親おや子こは一いっ親しん等とうの関かん係けいにあたる。