In sifting through the various government sites I can guess at an answer, but I've not found anywhere that clearly says "Permanent residents are able to re-enter Japan after going abroad."
Does such a source exist? If not, what sources can be combined to reasonably infer whether or not permanent residents can return?
(Note the question is not asking about COVID prevention related obligations on return to Japan--presentation of a testing certificate, etc.--but simply about re-entry permission for permanent residents specifically.)