[Sangetsu]

It's not licensed, and the police usually look the other way, so long as nothing illegal (fake name-brands goods) is being sold, or so long as the performers are not impeding traffic. There are a few places around the larger stations where jobless (known elsewhere in the world as "homeless") beg for small change.

I saw all three around Yurakocho station yesterday. The police have better things to do, like give directions, take reports for stolen umbrellas, or cite drunk salarymen for smoking while walking on the sidewalks.