Your father always wanted a daughter.

As night fell upon them, Doctor Twitchal led you deep within his makeshift clinic. The dim candlelight flickered off the walls adorned with various medical tools and oddities from times forgotten. His eyes lingered on every curve of your body, making you feel exposed yet strangely desired. He began preparing for the procedure, explaining each step while Angus and Teddy watched eagerly, their lustful gazes never leaving your form.

Doctor Twitchal injected you with an unknown substance, causing intense warmth to spread throughout your body. Your breasts continued to grow larger before your very eyes until they were full and perky. Next came the injection of old world nanites into the male bits between your thighs. You felt a strange sensation, like millions of tiny gears working inside you, shaping and molding your flesh. When he was done, he handed you a mirror. In its reflection, you saw what once was a man now had a beautiful pussy nestled between his legs. It glistened slightly, already wet at the thought of being used by these men.

As you sat there contemplating their words and the strange appeal that the idea held within you, Doctor Twitchal leaned closer, his hand still gently caressing your cheek. His eyes were filled with greedy desire as he whispered into your ear, "You know what? Why wait for this Angus or Teddy to claim you when I can make you truly complete right here, right now." With that, before you could react, he reached down and pulled up your dress, exposing your growing breasts and panties. He then began unbuttoning his own trousers, revealing his erect cock.

Angus and Teddy watched on eagerly, licking their lips at the sight unfolding before them. They knew what was about to happen, and they couldn't help but feel excited by the prospect of witnessing such an intimate act between two strangers. The air grew thick with anticipation as Doctor Twitchal positioned himself over you, aligning his throbbing member with your entrance.

"Are you sure about this?" he asked, looking deep into your eyes one last time, trying to gauge whether you were genuinely consenting or not. But in truth, it didn't matter to him either way; all he cared about was satisfying his lustful desires.

With a nod from you, he thrust forward, burying himself inside you completely. You gasped in pain and pleasure simultaneously, feeling stretched out like never before. Despite the discomfort, there was something undeniably thrilling about being filled so thoroughly by another person – especially someone who held so much power over your body and future.

Doctor Twitchal wasted no time beginning to move within you, his hips pumping back and forth with forceful strokes that sent waves of ecstasy through both of your bodies. Your breasts jiggled enticingly with each thrust, driving Angus and Teddy wild with desire. They could see every inch of their friend penetrating you, and they couldn't help but imagine what it would be like for them too.

As the minutes passed, the intensity grew higher and higher until finally, Doctor Twitchal let out an animalistic roar as he reached climax, filling you with his warm seed. His cock twitched deep inside you, milking every last drop into your waiting womb. The sensation overwhelmed you, causing sparks of pleasure to shoot throughout your entire body.

Once spent, Doctor Twitchal collapsed onto you, panting heavily as he tried to catch his breath. He looked down at you with a satisfied smirk on his face, clearly pleased with himself for taking such liberties with your body. Meanwhile, Angus and Teddy watched from afar, their own desires now raging out of control.

Angus wasted no time in claiming you first. He roughly grabbed your arms, pinning them above your head as he thrust himself into your newly formed sex. Each deep thrust echoed through the room, filling it with the sound of slick skin slapping against sensitive tissue. The pain quickly turned to pleasure as waves of ecstasy washed over you. His rough handling only fueled your desire further.

Teddy took notice of how much you enjoyed Angus's aggressive advances and decided to try something different. With gentle hands, he caressed every inch of your body while slowly entering you from behind. His slow rhythm allowed for deeper penetration, hitting all the right spots within your core. Your moans filled the air, mingling with the sounds of Angus's relentless pounding.

Doctor Twitchal watched on, stroking his own growing erection as he observed your transformation before him. As both Angus and Teddy reached their climaxes, they pulled out, leaving you lying there covered in sweat and cum. Doctor Twitchal approached you then, guiding his thick cock towards your now-used entrance. Without hesitation or warning, he plunged inside, causing a mix of pain and pleasure that left you breathless. He moved roughly, taking what he wanted without any regard for your comfort. It was clear this man saw you as nothing more than an object for his desires. And yet…you couldn't help but crave it. You found yourself arching into him, meeting each thrust eagerly.

As the night wore on, you were used by countless men who entered the clinic seeking release. Some treated you gently, whispering sweet nothings in your ear as they took you from behind. Others were rougher, claiming you like property to be claimed and conquered. Through it all, you lay spread eagle upon the table, completely at the mercy of these strangers. Your body became slick with sweat and cum, marking you as a woman well-fucked and thoroughly enjoyed. By morning light, when the last man had finally spent himself within you, you felt drained but oddly satisfied. In some twisted way, being used so freely had awakened something deep within you - a hunger for more.