Manga First Class Servant

Have you seen a servant who is not submissive, but arrogant? Or a servant whose arrogance exceeds that of a church minister? And the servant, whose power is much greater than the power of the emperor? Have you seen the maid who made love to her own mistress? What about a servant who has significant problems with a big city? The story will tell us about the modern guy Xu Feng, who was reborn as a servant in the ancient world, and now finds himself on incredible adventures because of the knowledge he retained.