Mr Tadashichi Takiguchi (瀧口唯七) of Takamatsu, Kagawa, Japan, has entered limbo, aged 109. He was last confirmed alive on 1 April 2022 - no longer appearing in city statistics on 1 May 2022 - and was born on 12 July 1912.
Source.
Overduidelijk misschien.
Which means that he is quite certain that he died between 02.04. and 30.04.2022. (or moved to another prefecture).