[Crea]

Don't know if this is exactly a nationwide "rule", but when I was in Tokyo, my friends told me to keep left at all times, like on sidewalks and especially escalators. On sidewalks it's less 'enforced' but in general crowds walk on the same side of the street.

On escalators though, you might get some annoyed "sumimasen's" if you're standing on the wrong side. Stand on the left, walk up the right side of the escalator.

I heard it's actually stand right, walk left in Osaka though?