The orgy shows up at chapter thirteen(If you don't like that type of stuff - I don't - skip it). Just skip it. The orgy is of little importance to the overall plot. I personally hate that scene and I had to stop reading, because it seemed badly done and a bit too far for my tastes.
the MC is crafty. Extremely crafty. He disguises himself as a sorcerer and succeeds because the ridiculous amount of knowledge he knows. (They call him professor *squeals*
He also is learning to play the piano (which he conveniently introduced into the world while helping his music teacher). He's moving up one step at a time. 😊