On Showa st. a lady in white will be standing outside a club muttering something. Go over to her and she will ask if you want a job. Say yes, all you have to do is stand outside the club and prevent anyone from entering. A guy in a black sweater runs up and demands to be let in, don't let him in, beat him. He will run off and get a friend, beat them. They will run off and get one more friend and they will fight you. Beat them and then just wait for the owner to pop up. Once you see her go talk to her and she will thank you and give you 20,000 yen. gain 500 exp.