Unpopular opinion

I don't like any story with having anything to do with the mc taking care of someone's sister/niece(and etc). Now I'm talking about those historical manhwa stories, where the mc basically acts as a maid for the "young mistress". ESPECIALLY if the mc herself is a young child too. Idk why honestly, but I just rlly dislike it. And it triggers me even more if the kid they r taking care of has some entitled bratty moments because "tHeY lIkE tHe mC".