After the suppression of the coup, Ōsumi resigned as Minister of the Navy, and served as Naval Councilor from 1936 onwards. In 1940, on the retirement of Prince Fushimi Hiroyasu, Ōsumi became the most senior admiral in the Imperial Japanese Navy; however, he was bypassed for promotion by Osami Nagano.
Following the suppression of the rebellion, Ōsumi relinquished his role as Minister of the Navy and served as Naval Councilor from 1936. In 1940, upon Prince Fushimi Hiroyasu's departure, Ōsumi ascended to become the most senior admiral in the Imperial Japanese Navy; yet he was bypassed for advancement by Osami Nagano.