Imperial Rule Assistance Association
He remained ambassador until March 1942, when he had to return to Japan due to health problems. After his return, he served as an official in the Imperial Rule Assistance Association political party and as head of the "Yokusan Sonendan" paramilitary youth organization from August 1944. He died on September 9, 1945, and was buried at the Tama Cemetery in Fuchū, Tokyo.