looking for lost BL manga

It was about boy in high school/college who didn't have money. This boy was looking for job and found good place, but it turned on that it is something like brothel, where employees are visiting clients in their houses to do "that things". His first client was dark-haired guy in his thirties. The boy was afraid that he would lose his virginity, but it turned out that the customer had merely dressed him up in a cat costume and spent the whole night looking at him in awe. I don't quite remember what happened next, I'm sure they met a few more times and had sex too. I didn't read it on mangago, but maybe it's there too. This manga had an unusual, simple, but older drawing style. Do you know title? ╥﹏╥