GUYSS HELPPP

So I randomly remembered this one manhwa I read and it was a/b/o verse I think? Basically the Mc was working for the ml as his secretary.
The ml's grandma offered him money to sleep with her son and he accepts cuz hes money hungry. So whenever they do it the Mc blindfolds the ml. The ml owns like a perfume company. All i remember HELPP PLEASEE