Mistress Diao could not believe that her assistant had made such a huge blunder. She was so disappointed in him that she felt that he had to be punished for it and she did it with her shit. That was the only thing she felt would make her forgive him and so she did not hesitate to shit on him. And then she went on to watch as he ate it all.
Goddess Mou was repulsed by how crazy this guy was and she had to do something about it. She chose to use her shit to punish the guy and she ensured that by the end of it all, she had made him change. As the guy ate her poo, he realized that it was easier for him to change than to go through what she had made him go through.
Goddess Wu did not think that this guy would want to test her the way he had. She was so pissed about it that she had to find a way to deal with him. He always assumed that she was this sweet girl who was timid. But she showed him the other side of her when she turned him into a shit slave and made him eat her poo and drink her pee.