Kaizaki's Things

I need help finding a yaoi. Its a short story of 1 - 2 chapters where the main character (uke) is a salary man and goes to hook up at a subway/metro station toilet. He eventually finds one who is compatible with him and constantly meets him at the same time and same day of every week and procceds to f*** in the same cubicle of the stations's toilet several times. After a few hook ups, they finally exchange names (⊙…⊙ )