Trained slave tied and fucked with fucking machine

This girl's training is being quite productive. First she is fucked by our fucking machine while she has a gas mask on her head while she is tied up. Then the Master takes off the mask to fuck her mouth with his huge cock making her choke. Then the Master decides to fuck her pussy, strong, as he likes and when he feels that he is about to cum, he spills his jizz on the face to the slave who looks at him with grateful eyes.