This was the name of an article in "Postscript: TheMagazine for Retired Educators"
It's a pretty catchy title so turned to read it first. It seems like a pretty good idea and made me wonder if such services exist outside of Japan. I imagine they do.
https://www.tofugu.com/reviews/ossan-rental/
The woman who submitted this articles has a blog:
www.thewayofwords.com
She posts some interesting stuff so perhaps I'll take a look at her posts from time to time.