“A Time for Revolution” (1963)
Hirai Kazumasa (writer).
Read in 2020.
Read in Speculative Japan.
Artists escaping an oppressive post-apocalyptic society transfer their minds back to the near future of the time of publication to obviate dystopia.
A smaller-scale, potentially non-deterministic The Shadow out of Time (1936) with comedic incongruity.
References here: THX-1138 (1971/2004).