Issaku Tomoe was born in Okazaki, Aichi Prefecture, Japan, on 15 August 1909. He aspired to become a physician, and Nagoya Medical College awarded him the title of Doctor of Medicine for his thesis entitled ”Pernicious Anemia in Japan” in 1939.
In 1968, he was appointed as the director of the Municipal Okazaki Hospital. He remained an active physician well past his 90th birthday. Tomoe had two daughters. He was driving until he was 99.
At some point, he moved into the nursing home in Okazaki. At the age of 110, he was wheelchair-bound, but still enjoyed watching television and reading newspapers. He had five grandchildren.
Issaku Tomoe passed away in Okazaki, Aichi Prefecture, Japan, on 14 April 2020.
In September 2018, at the age of 109, he was reported as the oldest living man in Aichi Prefecture. His name was not publicly revealed at the time.
On 12 February 2020, following the death of 112-year-old Jo Makihara of Gamagori, he became the oldest living resident of Aichi Prefecture, at the age of 110.
On 23 February 2020, following the death of 112-year-old Chitetsu Watanabe of Niigata Prefecture, he became the oldest living man in Japan.
Tomoe was succeeded by Shōjirō Shirai as the oldest living man in Japan.
* “岡崎市民が国内男性最高齢者になりました。” – Okazaki City, 25 February 2020
* “愛知・岡崎の巴さんが国内最高齢男性に 110歳” – Chunichi Shimbun, 25 February 2020
* “国内男性最高齢の岡崎市民が亡くなられました。” – Okazaki City, 15 April 2020