HELP PLSSZ

There’s this manga with a guy with black hair, works a corporate job, and has a humiliation kink I think. Before he goes to the store he puts on this vibrating pink pibble on his pee pee. Goes to the store and I guess starts outing himself out to the cashier, he buys alcohol or cigarettes or something. He tries to hand his id to the cashier but drops it and I guess cums..?? Anyways the cashier takes him to the back and they do some freaky stuff.. pls help me find the name of it ╥﹏╥