Breast Modification
It took quite a while of walking to reach the place called the Breast Training Room. Though it was a cramped room of about five pyeong like the others, its purpose led to some structural differences. For one, the floor was covered in hard marble. The shelves were packed with tools that looked terrifying at a glance, just like everywhere else, but unlike other rooms, there were no restraints or devices here.
In the center of the room stood a thick iron rod jutting straight up from the floor—a structure that particularly caught the eye. At its top was a large circular ring attached horizontally. No one could guess its purpose just by looking.
"Huu..."
Sensing the unusual atmosphere, Heo Seong-ah shuddered and swallowed hard. For some reason, a chill ran down her spine, and shivers wracked her body. This wasn't her first training session, so why did it feel so terrifying?
"Huuup..."
Breast modification? Training? What the hell are they going to do to my breasts...? She couldn't even imagine it, and the more she thought, the more her fear grew.
"Livestock Number B62."
"Hup!"
While she was lost in thought, the Manager's hand suddenly stroked her head. Heo Seong-ah flinched, goosebumps rising as her shoulders trembled.
"Why so startled? Please follow quietly."
"Kkuuup..."
The Manager tugged her leash, leading her to the center of the room. Reaching the iron rod, he unfastened the leash from her collar and gripped her shoulders, forcing her down. She ended up kneeling politely on reflex.
"Just stay still."
"Kkuuuwuup!!"
The band over her mouth came off, and the thick dildo stuffing her throat was yanked out in one swift motion. In the past, she would have dry-heaved with tears in her eyes, but now, accustomed to the sensation, Heo Seong-ah clamped her mouth shut and held her breath to suppress the gag reflex.
"Hmm..."
Observing the fruits of excellent training, the Manager thought to himself that it was time to use an even thicker dildo next.
"Livestock Number B62, straighten your back and face forward. Execute."
"Kkwek, y-yes..."
Not knowing what was coming but obeying anyway, she moved as ordered. Kneeling with her hands clasped at her navel, she arched her back as straight as possible. The iron rod behind her shifted up and down, the ring opening wide before clamping around her neck.
"Kkheuk!"
"Just stay still. If you want it over quickly, don't move."
"Kkuuuk..!"
The Manager slowly turned the dial, adjusting the ring's size until it loosened slightly around her neck. Then, with her back straight and seated, he adjusted the rod's length to lock her in place, preventing any movement.
"Huuk... Kkuk..."
In the end, Heo Seong-ah was frozen kneeling, unable to budge. The moment she relaxed even slightly and her back curved, the metal ring crushed her throat, choking her. Twisting due to discomfort was impossible with her knees planted.
"Kkuuuuk..."
Just her neck fixed to a single iron rod, yet her body was robbed of all freedom, forced to submit to training.
"Good. Now clasp your hands behind your back."
"Y-yes..."
As she obediently extended her arms back, the Manager cuffed her wrists with shackles linked by a very short chain that passed through and locked to the rod. There was no way to bring her hands forward.
"Preparation for training is complete. I'll gather the necessary tools, so stay put."
"Kkwek... Y-yesss..."
Heading to the shelves, the Manager selected tools for her training.
"Hmm... Which to choose..."
There were endless ways to develop breasts. Using drugs to hypertrophize them until daily life was impossible; making nipples as sensitive as a clit so even a light touch made her squirt; turning the breasts themselves into new erogenous zones so she couldn't wear a bra, reduced to a vulgar body. Or stimulating the mammary glands to induce lactation; or deforming the breasts to create grotesque holes for cock insertion. Piercings to chain them together, reshaping nipples into toys to his taste...
"Hmm..."
It was a tough choice. Breasts, unlike other areas, had no physical limits, so they could be modified however the owner desired. Endless possibilities, but...
"No specific requests."
1. Preserve virginity. I'll be her first.
2. Turn her into a whore who screams in ecstasy from any touch. To the point daily life is impossible.
3. Instill fear of me. So she never resists.
4. Keep her mind intact. So she can reflect on her mistakes forever.
5. Develop everywhere except her pussy. To the point daily life is impossible.
Among the demands from her future owner, nothing specified breast modification. Items 2 and 5 could apply, but the scope was too broad—no clue where to focus.
Asking individually was out of the question.
"Hmm..."
Well, for now, make the entire breasts as sensitive as a clit, impossible for daily life? Add a tweak so they lactate with every orgasm? Texture like soft, squishy slime? Keep nipples perpetually erect so sensitivity never fades? Her current size was a bit small, so enlarge them to fully envelop a cock? Perfect.
"Haha..."
Just imagining it had him thrillingly aroused, a laugh slipping out unbidden. A body part she'd thought was hers forever would soon be remade into a tool for a man's pleasure.
"Huu... Let's do it."
Sensitivity boost, nipple erection, texture mod, lactation, size alteration—these were within his discretion without approval. He gathered the tools into a box.
Thud, thud—he deliberately made his footsteps loud, amplifying her fear. The rattling box only heightened it.
"Livestock Number B62."
"Huk..!"
His cold voice startled her; her posture slipped, the ring tightening. She coughed and gasped, barely escaping the pain.
"Training begins now."
"Y-yes..."
"If today's session succeeds, you'll feel grateful to me."
"Y-yes..?"
She couldn't grasp his intent, though a vague inkling formed. This modification would reshape her breasts themselves. Internals unknown, but externally, they'd rebirth as perfect orbs.
"You'll love it, for sure."
"Huuk..."
Breasts anyone—man or woman—would call pretty. Walking streets, exercising, eating out, watching movies... every daily moment would draw eyes. For attention-loving her, ideal.
Of course, only if she weren't female livestock. Now, her breasts were mere attractive accessories on a cock case. Thinking of her monopolizing owner pissed him off.
"Livestock Number B62."
"Y-yes... Manager, sir..."
"No freedom until breast modification ends today. Understood?"
"Huuk, y-yes..."
Freedom never existed from the start, yet he dangled those fleeting post-session minutes. Using her scant daily respite as leverage, he reached for her body. Sliding hands from solar plexus up and down, he unzipped the black latex suit, exposing her bare breasts—no bra, glistening with aphrodisiac after a full day sealed away.
"Haa..."
Untouched by air, they shone slickly despite the time. He smeared the slippery aphrodisiac with his palm, rubbing her entire breasts.
"Haa... Haat... Ha..."
Each time his fingers crushed her rigid nipples, chills shot down her spine. The teasing, maddening pleasure surged; she clenched her thighs tight.
"Uk... Uuuk..."
"If you need to cum, go ahead."
"Kkuuuk..!"
She desperately wanted to. But squeezing her thighs or relaxing to focus on the stimulation... orgasm eluded her completely.