From what i remember is that the mc was female that had gone back in time. I think she lived with a duke's family and has two brothers. One of them was smart and the other was a good swordsman. One of the scenes was that the smart brother's tutor was abusing him and mc helped reveal the truth. One scene was that brother's tried to purchase slaves and they went to slaves house for mc. The father bought a whole toy store for mc as they were competing who's gift is the best. Please can anyone tell me what the title is?
I think you're talking about "The Baby Raising A Devil" https://www.novelupdates.com/series/the-baby-raising-a-devil/