TF Cap: Cocky

Img source: AI (Stable Diffusion. Generation data at the bottom)

... does this technically fall under the label of gender bender and futanari? Anyway. Penisization! Another rather wacky transformation concept I very much like. Sadly there isn't that much art of it. Since the penisization lora wasn't cooperating, I needed a lot of manual editing and image to image to get the image right, but I still have the generation data for the three images I used as "ingredients" at the bottom as usual.
Caption number 52.

Anita wakes up on a cold, hard surface. She tries to stretch, but metal restraints around her wrists prevent her from doing so properly, causing her to notice that something is very wrong.
"Huh? Where... How did I get here??" Looking around, she seems to be in an empty office building room. While trying to pull herself free, she then spots a figure from the corner of her eye. A tall man in a lab coat, with short dark hair and glasses. He has green eyes, and a rather uncaring facial expression. It's clear that he isn't there to help her, and the alternative is rather obvious.

"You're why I'm here, aren't you? Let me go, and tell me where I am. right. now."
"Subject... no, product is awake..." *Sigh* "I'm not particularly interested in doing this either, miss. But I have to."
He then walks up to the table Anita is restrained to, and frees her hands. Not questioning why he would give her such a chance, she quickly leaps to her feet. "You cocky bastard..." She quickly dashes past the man to the door. She turns the knob, and finds the door to be locked.

"Interesting choice of words... Stand still for a moment." Turning around, she sees an unusual green glow in the man's hand. With a slight flick of his hand, he then "throws" the bolt of magic at Anita, causing a wave of pleasurable tingles to shoot through her body as her clothes are spontaneously torn to shreds, uselessly falling to the floor. "A-AAgh!? M-my clothes?? W-what the fuck did-nghhn~ y-you do to me~?!" She blushes as she tries to keep her moans back. Meanwhile, the man simply looks at her as her body begins to distort.

While she is covering her nipples with one arm, her breasts suddenly begin to "shift" downwards. "Huh?!" They eventually settle just below where her navel was, as her navel disappears. "N-no... I can't be turning in- mmhf~ into some kind of... animal, r-right?" She is awkwardly trying to cover both her crotch and what she fears will soon become some kind of udder with her arms. The true nature of her transformation is far more unusual than she could ever have imagined though.

Hiding her privates soon begins to become difficult, until it eventually becomes impossible, as her arms shrink and retract. "Wha-!? Now my- mmhm~ a-arms?" She says in a panicked voice, as her transformation becomes increasingly difficult to even comprehend. Her torso and neck begin to swell, forcing her to look up. Once her arms and shoulders fully vanish into the sides of her shaft, her appearance is obviously phallic, though she can't see it. She can tell that her body barely feels human any more though, and for that tears slowly roll down the sides of her face.

Not even that would remain long though. Her hair falls out, and her eyes are slowly closed as her face smooths over and its features disappear. The skin on her face turns pink, and becomes immensely sensitive, even when compared to the rest of her body. Her mouth begins to shrink, as she forces out her last words in between sobs and moans. "you... ahnnn~ b-bashta b b... uuu..." She gradually goes quiet, as precum leaks over her head from what was once her mouth. With her transformation complete, she is what can be described as little else than a huge, bizarre, walking cock.

The man in the lab coat who did this to her then walks over to what was once Anita. Though his poker face has been fairly convincing up until this point, his breathing gives his arousal away. "You deranged pervert!" She thinks to herself, wanting to scream it at him. Sensing his proximity, she tries to give him a vicious kick. But with her legs weak from the constant pleasure her body gives her, she only manages to take an awkward step forwards, almost tripping onto him.

The man reflexively raises his hand, pressing it against Anita's massive, sensitive shaft to keep her from falling onto him. His touch sends a huge wave of pleasure through her, sending her over the edge and causing a fountain of cum to erupt from her tip, and love juices to gush in between her legs. If she had a mouth, she would have let out moans of ecstasy as she collapses onto her knees. "... Incredible..." The man softly exclaims while blushing, before shaking his head.

He takes a few steps away from the quivering cock, and takes a cellphone out of his pocket.
"Hello. ... Yes, this is professor Corbin. I have her... what you requested ready. ... Yes, that is the location. You'll be sending someone over to pick it up? ... Okay, I will be locking the door so that no one enters in the meantime. ... Yes, pleasure doing business with you as well."
Professor Corbin then hangs up the phone, and puts it back into his pocket. He stares at the cock, who has yet to even begin to recover from her orgasm for a few more seconds. Finally, he turns around, unlocks the door and walks out, leaving the poor girl turned giant penis behind to be picked up by her new owner...

Img1
masterpiece, best quality, 1girl, solo,
(penisbody), penis, erection, large breasts, trembling, uncensored, precum, laboratory,
<lora:more_details:0.4>, <lora:penisheadv1:0.8>
Negative prompt: (low quality, worst quality, badhandv4:1.4), easynegative, deformed eyes, blurry
Steps: 40, Sampler: DPM++ 2M, Schedule type: Karras, CFG scale: 7, Seed: 978061476, Size: 512x768, Model hash: cadae35d32, Model: koji_v21, VAE hash: e9ed949371, VAE: anythingKlF8Anime2VaeFtMse840000_klF8Anime2.safetensors, Denoising strength: 0.25, Hires upscale: 2, Hires steps: 20, Hires upscaler: R-ESRGAN 4x+ Anime6B, Lora hashes: "more_details: 3b8aa1d351ef, penisheadv1: 92588c14fea8", TI hashes: "badhandv4: 5e40d722fc3d, easynegative: c74b4e810b03", Version: v1.9.3
+manual editing & img2img

Img2
masterpiece, best quality, 1girl, solo,
(penisbody:1.4), penis, erection, large breasts, trembling, uncensored, precum, laboratory, transformation,
<lora:more_details:0.4>, <lora:penisheadv1:0.8>
Negative prompt: (low quality, worst quality, badhandv4:1.4), easynegative, deformed eyes, blurry
Steps: 20, Sampler: DPM++ 2M, Schedule type: Karras, CFG scale: 7, Seed: 3224756575, Size: 512x768, Model hash: cadae35d32, Model: koji_v21, VAE hash: e9ed949371, VAE: anythingKlF8Anime2VaeFtMse840000_klF8Anime2.safetensors, Lora hashes: "more_details: 3b8aa1d351ef, penisheadv1: 92588c14fea8", TI hashes: "badhandv4: 5e40d722fc3d, easynegative: c74b4e810b03", Version: v1.9.3
+manual editing & img2img

Img3
masterpiece, best quality, 1girl, solo,
(penisbody:1.4), penis, erection, large breasts, trembling, uncensored, precum, laboratory, transformation, sagging breasts,
<lora:more_details:0.4>, <lora:penisheadv1:0.8>
Negative prompt: (low quality, worst quality, badhandv4:1.4), easynegative, deformed eyes, blurry
Steps: 40, Sampler: DPM++ 2M, Schedule type: Karras, CFG scale: 7, Seed: 2194612987, Size: 512x768, Model hash: 027381e86c, Model: futanariFactor_alphaV10, VAE hash: e9ed949371, VAE: anythingKlF8Anime2VaeFtMse840000_klF8Anime2.safetensors, Denoising strength: 0.25, Hires upscale: 2, Hires steps: 20, Hires upscaler: R-ESRGAN 4x+ Anime6B, Lora hashes: "more_details: 3b8aa1d351ef, penisheadv1: 92588c14fea8", TI hashes: "badhandv4: 5e40d722fc3d, easynegative: c74b4e810b03", Version: v1.9.3
+manual editing & img2img