I was sure that this was all fake somehow and that Seirra was just sex crazed and didn't know how to express it. That is until Seirra proved me wrong....Seirra shot a huge load down my throat and with so much force that cum seeped out of my mouth while having her cock still in it.I finally separated myself and her cock somewhat loving the fact that my sister just came in my mouth. I got ready to get up and leave when Seirra bent me over and began to tease my pussy with her cock. "What are you...". It’s a little cool out anddamp making my nipples really hard, but it stoppedraining. As soon as I stripped, I started getting veryhorny, so I headed for a spot where I could getcomfortable. I sat down on a big rock by a pond and putmy feet into the water. It was cool, but felt good. I began rubbing my pussy, spreading myself open to getat my clit. Before long I had three fingers in while myother hand worked my clit and my nipples alternately. Iwas quite a sight, lying back naked playing. Once it was off I tossed it and made her look at me. She looked down, "Shade master."I smiled, "Mist and Shade."I turned to start walking and looked back, "come."They followed me down the tunnel until I reached a marked set of stairs. I began climbing and ignored the doors as I went all the way to the roof. I looked out cautiously before pulling them after me to the roof engineering room. I closed the door and moved to one wall filled with small vid monitors.I touched a switch and watched them. He frowned deeply, a feeling of alarm and intense distaste washing over him but managed to restrain his voice from revealing how flustered he felt:"No, I mean workers. There is absolutely no need for workers of any kind? No menials? No laborers? Expert artisans of any sort?"The disbelief in the Prosops' voice could shatter stone-masonry easily:"Sentient people doing menial work? That would be absurd. Are you familiar with that kind of thing in your world? It must be a really backwards place;.