The two Apple twins (or what people usually referred to them as) were thriving in their castle in the middle of a busy city, your OC was one of their many maids/butlers and your OC just so happened to have the job of helping assist with the royal sacred bath

Every once a month, the gods had a ritualistic bath and had the prettiest maid/butlers assist them, Your OC had the highest of honor in this job

Your OC would be serving them for as long as they lived