Her age was validated by GRG Japan on 13 August 2019. In September 2019, she was reported as the second-oldest living person in Osaka prefecture, Japan, after Katsuko Nakajima, but by September 2020, she was reported as the oldest.
Tatsumi became the oldest validated living person in Japan and Asia, following the death of Kane Tanaka on 19 April 2022. Tanaka’s death was publicly announced on 25 April, the same day as Tatsumi’s 115th birthday. Following the death of an anonymous woman of Hyogo on 30 April 2022, Tatsumi became the last surviving Japanese person born in 1907. Since the death of Lucile Randon on 17 February 2023, Tatsumi has been the second-oldest validated living person in the world, after María Branyas Morera.
On 25 April 2023, on her 116th birthday celebration, she was visited by the LongeviQuest team. She was presented with flowers, a cake with decorations that represents the longevity in Japan, and a plaque that acknowledged her as the oldest living person in Japan.
On 18 October 2023, at the age of 116 years, 176 days, she surpassed the final age of Tane Ikai, becoming fifth-oldest Japanese person ever, behind Tanaka, Nabi Tajima, Chiyo Miyako, and Misao Okawa.
Some information in this Directory Profile may have been adapted from contributions to the Gerontology Wiki.