I too live in Japan. You don't have to put up with the Japanese office regimen if you don't like it. My last and current roles have been at Japanese companies and I've been able to WFH for both. No guarantee you'll be able to rid yourself of GCP/AWS though.
This! Also live in Japan & work for a domestic company w/friendly work culture (no dress code, WFH common, flex time). Definitely look for something new if you’re not happy.
http://www.setileague.org/songbook/equation.htmhttp://www.avsport.org/drseti/audio/equation.mp3