When Malaysia introduce Ron-95, motortrader and other auto magazine already publish what car can use. Cefiro A32 and A33 is advice able to use 97. Go search the old news. And Japan mostly use high octane fuels.
You can try 95 for few tank, you know the difference. Even my wife can tell the difference. Alternative, fuel 1/2 95, and 1/2 97. The difference will not be that bad.