Chapter 35

The sensation was unlike anything you had ever felt before. Feeling yourself open up around this unspecified entrant. The muscular ring that served as guard to all the inner worlds of you; loosening and stretching to let another human slide in. You could feel the shape of him. The warmth of him. The slightly-twitching life within this lump of flesh that was now melding unsubtly with your own.

Your step-sister continued to kiss you, shoving her tongue into your mouth with a furious passion far outmatching the gentle, steady pressure of whomever was pushing their way into your other end. It was a curious contrast of physical and emotional escalations, to find yourself beginning to relax into the prospect of having a cock buried inside your rectum, urged on by the clearly overflowing excitement of your own step-sibling at the thought. The large amount of lubricant they had pushed into you did its work, and there was very little friction involved in that slow, driving progress. You couldn’t really tell how far inside you that spear of meat had driven, only a sense of deep, intense fullness from the bottom of your bowels. A stinging, gasping impression of girth widening your sphincter. While, just a little way in, some tightened knot of sensations throbbed with every lump and inch that passed it.

The man invading you did so in rising waves. Two steps forward, one step back. Pulling back for a moment… then pushing in a stage further. These steadily increasing movements built up so incrementally, that you almost didn’t realise when the fucking began in earnest. So intently did each delving thrust demand your focus, that their increasing pace and your body’s surrender to accepting them crept up on you. When you did realise, you felt yourself clench involuntarily. A sudden increase in tightness that earned a groan from the person embedded in you. It was a sound of intense pleasure, not discomfort though… and you began to realise that your own nerves had been sparkling with building sensations which were not altogether unpleasant for a while now. It wasn’t anything like the feeling of being inside Nancy had been… but was a whole new galaxy of internal conflicts and combustions. You broke away from Jenny’s kiss and heard a frail and squeaking voice begin panting and gasping in a wholly unseemly fashion. Once again, you could hardly believe those lewd and fragile noises were your own.

The stomach-churning, guttural experience just kept intensifying and intensifying. You felt your own hips begin bucking backward to meet each heaving thrust of the one making love to you. Your own small penis was swollen to the hardest it had ever been, bouncing against the belly of your ‘twin’ below… and the fork between her legs as she intentionally raised it up to earn that share of the action. You felt a hand swing down to smack against your asscheek, and yelped in delight at this burst of increased sensations. In that moment, there was no clear discernment between pleasure and pain, up and down, in and out. There was only the joyous, burning bonfire in the deepest, darkest pits of your small body. The knowledge that someone was feeding those flames with every creaking heave of their own muscles, and pulling their own pleasure and satisfaction out from you. It felt good to feel like your slim, squeezing form was granting them something so precious. You realised that was what encouraged you the most: The tingling sparks that crept across all of your skin, to hear their breath catch and feel their cock throb inside of you.

You lost all track of time once those thrusts got up to their constant pumping rhythm. It might have been a matter of minutes or hours that whoever it was spent slamming himself into you. At some point, your own dam burst and sent several trails of semen spurting out across your step-sister’s stomach… but it was a significant span later that you finally felt the penis inside you give out its final burst of pent up energy. You couldn’t really feel the splatter of yet more fluids along the walls of your inner passage, but the twitching swell of that pillar of flesh let you know exactly was happening. Then you were left to droop into the sticky, splattered embrace of your step-sibling… as that lump was finally pulled free from your gasping sphincter.