Japan is a great location for street photography, especially if you can get yourself out of Shinjuku or the other touristy locations of Japan.
I have a couple of favourite locations in Sendai that I like to visit every time I visit and build up a sort of catalogue of of photos of these places over the different years and periods of the year that you visit. One of these locations in Sendai is the Asaichi Market, located at a 5 minutes’ walk from the West Exit of the Sendai JR station