Hey guys, I was walking along the back side of the main street in Sugamo(Tokyo)(which is not really known for being the shadiest place) and I saw 3-4 guys standing and talking to each other on either side of the street. As soon as they saw me they all started to yell over each other and show me into their respective places which had signs saying something and numbers between 3000-6000, because I felt uncomfortable I made it out of there quickly and didn't read the signs.
However, I got curious about what is going on. I got my suspicions but I don't want to draw conclusions. What is it?