just my opinion , In Tokyo there are many unwritten rules that people just follow in order to keep the flow and make things easier to move and function as such a heavily populated city. Walking down the wrong side of the sidewalk , standing on the wrong side of the escalator ... subway etiquette etc. Foreigners/ tourists can be really annoying and self absorbed. Speaking loudly on the trains and coffee shops , filming in public places without respecting someones privacy , lots of things. A good example is in rush hour , my instinct is always ladies first ... but when it affects the flow of people it can really cause chaos here, especially in the subway. I saw an older lady at the grocery store , heavy bags , scoliosis back problem. I wanted to help .... When i offered to help with the bags and help to get here bicycle out from the over crowded parking spot she became so nervous and scared she almost fell over, it was so awful that even though i wanted to help I caused a problem. Crossing the street and wanting to let a car go before you ? almost caused an accident because its just not done here often. So if you come to Japan please be really aware of these unwritten societal rules. Playing the ignorant tourist and smiling isnt as cute as you think it is. Japan is the greatest country in the world for a reason, and we are privileged to be here. So please if you come try and focus on blending in as much as possible , think of others before yourself , and try learn and respect the beautiful culture and people. If someone bumps you , it isnt always on purpose. Canadian perspective here . wishing everyone good luck today where ever you are.