You just need to understand that if you agree that Monica, for example, not only live in the slums, but also bring visitors to her home, then it is obvious that you can no longer remain "spotless and clean". But even in this case, the DM gives Monica a choice, and in most scenes in the same Slums there is both a more lustful and less depraved option to continue the sex scene. For example, a scene with a Stranger after a blowjob may end with a simple cunnilingus for Monica, or maybe a full-fledged sex. The choice is for the player.