I just had another look at this video... and it occurs to me that it might have something to do with the lack of cars? Humans have a long history of narrow roads between structures, with people walking about free from the noise, exhaust, and danger of speeding cars. Some sort of DNA memory from past eras perhaps?
Thanks for sharing. Shimokitazawa is my hometown where I still live. It is so good to see it back then. I wanted see more of the south side going deeper and I hope to see a longer version with longer cuts.