Have you been a good slave for Astro? Performing all the duties and tasks she's given you? Keeping yourself in chastity and getting her gifts? Have you been a loyal slave? Well, good, in that case, you earned a little reward. It's time to reap the benefits of your labor. Since you've been so good, your reward is some masturbation and potentially an orgasm. That'll put a smile on your face no? Look at what your Mistress brought you. It's your favorite! A Big Black Cock. You must be hungry for it aren't you? What all are you going to do with that cock?