Kammala jumla mai zuwa: A gasar wasannin Olympics ta 1972, bayan da Japan ta kasa cancanta don wasannin Olympics na 1972, Okano ya yi murabus kuma Naganuma ya sake zama manajan a shekarar 1972. Ya gudanar da gasar cin kofin duniya ta 1974 da kuma
Wasannin Asiya na shekarar 1974. A wasannin wasannin Olympics na 1976 a watan Afrilun 1976, bayan gazawar Japan ta cancanci shiga wasannin Olympics na 1976, Naganuma ya yi murabus.