It seems that in Japan face-masks are currently recommended (not mandatory):
- in public transportation, and
- both indoors and outdoors, if there is a distance of less than aproximately 2 meters.
But what type of face mask should I use?
A simple surgical mask? A FFP2 or similar?
EDIT 26-MARCH-2023:
Thank you for the answers and comments. I have just returned from my trip to Japan - I found out that most people (around 90%-95%) used surgical or cloth masks almost all the time and everywhere - the number of pepole without any mask at all or with a FFP2 mask were a minority. So I followed suit, and no problem at all.