Heck, he goes on to brainwash tons of people into his slaves(basically all the people that matter in the Empire other than the princess who is so insane that the brainwashing doesn't work on her, but she doesn't care anyway since she's the one manipulating him for her objectives). However, him turning pretty much all women he comes across into his sex slaves (impregnating tons of them) is his own choice.
Then, he later goes on to find a way to turn his charm power into a drug that he then proceeds to spread through an allied country. With everyone affected forcing others to take it and be affected as well, with all of them becoming fanatical mind slaves to him.