Naega Kkosiryeodeon Geon Manimieonneunde

Nak-Ha, who found himself transported back to the Joseon Dynasty, found himself possessed by the body of a commoner, neither royal nor noble, but strong and well-built. While wandering the streets, he managed to get hired as a servant by clinging to a kind-hearted lady of the house... But in a household said to be the wealthiest in all eight provinces of Joseon, where he wasn’t even allowed to eat meat, Nak-Ha decides to try his hand at the “handsome man’s ploy” for the first time in his life to win over the kind lady.
But why is it the young master of the house, not the lady, who’s secretly summoning me to his room…?

(Source: MrBlue, translated)