Lots of healthy-looking people wear masks — is everyone sick?
Many people wear masks even when they seem well, and often when they have just a slight cold.
It's largely courtesy — protecting others when you might be contagious — layered with hay fever and simple convenience.
Why — five layers
If you might be contagious, masking is framed as consideration for others, not just self-protection.
Severe spring cedar-pollen allergies (kafunsho) drive heavy seasonal mask use unrelated to infection.
Masks also offer a low-effort private zone — no makeup, no small talk, a bit of uchi space in public.
International view
Courtesy masking is common across East Asia, not Japan-only; the everyday, pre-pandemic normalcy of it is what surprises visitors.
But not always
Post-pandemic it's fully optional and rates have dropped; no one will mind if you go maskless outdoors.
What to do
You don't have to mask, but wearing one when you have a cold on packed trains is genuinely appreciated.
Sources
- Public-health mask guidance
- Reporting on post-2023 mask norms