Adolescent Adam 8: Chapter 4 - A World of Change

When prostrating, you were apparently supposed to keep your hips raised just a bit.

When looking at people, the human eye naturally turned toward the head, so when lowering your head, you could apparently show your sincerity by raising your hips that little bit.

It was unclear if Koishi knew that or not, but…

“Nishihara-sama, Asama-sama, Miyakokubaru-sama, thank you for coming.”

Despite not being taught to, she lifted her hips while lowering her head to the floor to greet her customers.

Her legs were extremely long, so this accentuated how deeply her head was lowered. She was still in training, but one could see why every one of her customers became a repeat customer. Shibaki smiled bitterly at the irony of her acting like a well-trained product yet having reached that point without his training.

“Ee hee hee. I see Ookura-san was right. You do have one hell of a girl here.”

“Look at her skin. Where are you from, girl? You must have had a good diet growing up.”

“Oh, she smells nice. Maybe I didn’t need to take that Viagra.”

A foursome three days into her training was a fairly rough schedule, but Koishi showed no sign of backing out. Three men who had to be older than her father were licking and stroking her sweet lips, modest breasts, armpits, sides, and back, but she was silently bearing with it.

That showed just how much promise the girl had.

As a trainer, Shibaki did not need to watch over her while she was at her “business”, yet he was watching through the one-way mirror because he had been charmed by her in a way.

The way she did things was truly skilled.

Since it was only her third day, she was getting customers who liked new girls. They went out of their way to buy undeveloped girls who were still not thoroughly trained. They hated girls who moaned like crazy, so they quite liked Koishi’s unsociable attitude.

They fit each other’s needs, they rejoiced in the girl’s fresh and smooth skin, and the girl just had to put up with whatever they did.

“Ah.”

But when their tongues reached an especially sensitive spot like her armpit, earholes, or between her butt cheeks, she would let out a nasal voice.

She would then give a frustrated look at being caught off guard, but that seemed to arouse the men so much they wanted to cheer.

“How were today’s customers?”

“…Normal.”

Once Koishi’s work was done, she was given time to shower.

She washed her entire body and rinsed out her mouth over and over. She was used to having her body coated with middle-aged saliva and such, but she must not have been used to having it in her mouth. Her newly-learned blowjob skills were receiving decent reviews, but it was difficult on her.

Conversely, she no longer washed her lower body as thoroughly as she had on the first day. Instead of washing it to the point she seemed to want to rub the flesh off, she seemed satisfied with wiping it off with soap lightly enough that it did not hurt.

It had only been three days, but she was definitely changing her attitude. Shibaki grinned at the results of his training.

“You could fool cheap customers like those, but your oral technique needs work. Come to my room after this. You need further lessons.”

“…Okay.”

After that demand, he left the shower room. He had been the one to tell her not to work too hard at the blowjobs because these customers were into amateurs, but finding fault in her work regardless was part of the training.

Shibaki gave the lessons himself solely as part of the training.

After leaving the shower room, Koishi was taken to the bedroom without being given any clothes.

Once in the bed, she naturally tried to hide herself under the sheets. Her behavior was always very cold, but the glimpses of shame seen at times like this tickled at the male heart.

He had only heard she had run away from home, so he wondered who she was.

Her great pride, her strong shame, and the occasional mannerism he noted hinted at some kind of nobility. His instincts told him she was from quite a well-off family. But as someone with much meaner origins, he did not even try to think about what well-off family it could be.

“Heh heh heh. You’re getting wet a lot easier lately, aren’t you?”

“Uh…I-I wouldn’t know.”

Whatever the case, she was a product right now.

When the trainer’s hand reached for her crotch, she did not actually resist, but she did close her legs just enough to press her slender thighs against his intruding wrist.

Of course, the soft squeezing of her muscles was an enjoyable thing for a man. His thick fingertips easily found their way to her vulva.

She had spent two hours with those three men. That area had been tormented with a number of things and it maintained a heat a few degrees warmer than the shower water.

“Ah…hh…ah, nh…”

The girl’s face twisted in displeasure when she felt his wiggling fingertips.

“They were cheap customers, but it seems they were enough to light a fire in a masochistic whore like you.”

“That…isn’t true.”

“Really? I see. Then this heat must come from me calling you in here. Heh heh heh. You still have a lot to learn about your job, but you must quite like my training.”

“Kh…”

When he said that with confidence in his voice, her expression was more sharply twisted by mental worry than the physical stimulation. She was pale, so it was easy to tell when her cheeks grew red.

Of course, he already knew the answer since he was controlling the way the girl thought about things.

Ever since starting her training, Shibaki controlled her sexual pleasure more thoroughly than any lover. In order to break in her body and teach her how to service men, he had needed to thoroughly caress her until she climaxed. He always insisted on extra lessons after the post-job shower and he used those lessons to gently work at her sensuality and sometimes gave her an orgasm powerful enough for her to pass out.

Koishi and her body understood that mental conditioning better than anyone: the things this trainer did felt good.

(Just like…Pavlov’s dogs, was it? Heh heh heh.)

Middle school graduation was his highest level of education, but he had made a living pleasuring women ever since he was a minor, so this girl’s body was putty in his hands in no time.

“Hh…”

He had already determined just how much he had to soften up the throbbing flesh at his fingertips before it was ready for him to stick a finger inside. Once he inserted the tip of his index finger, the entire deep area welcomed the penetration with a wavelike motion. Koishi’s nasal moan contained some surprise at the fact that her body had desired this even more than she had thought.

“Spread your legs. Spread them wide.”

“…”

He only inserted it to the first joint and he spun the finger around to widen that teasingly shallow area.

The girl was hesitant to obey his embarrassing command. Her powerful sense of shame always made her hesitate at times like this.

But the customers who were into more innocent girls loved that short pause. Instead of forcing her, the trainer continued moving just his fingertip.

The length to the first joint spread a very small portion of her body’s core. It touched her and teased her.

And it was that stimulation rather than the command that did it.

“…Okay.”

Koishi finally gave in and spread her legs in an M-shape.

And she spread them wide as if to show she was faithfully obeying. She spread them to nearly 180 degrees. The tugging from her thighs spread her vulva in a diamond shape with a finger inside the vagina and her butt cheeks squished together to hide her cute anus.

This flexibility made Shibaki wonder if she had been a gymnast and he smiled in satisfaction. This mystery of a girl had such powerful shame yet she also had a definite and deep-rooted masochism that prevented her from disobeying his orders. She inspired a throbbing in the maleness sealed deep down within the veteran trainer.

He had intended to focus on her blowjob technique today, but…

“Get on top of me.”

He grabbed the girl’s legs and rolled onto his back in the bed.

She was confused by the tug on her legs, but she straddled the man’s face on all fours as told. He also removed his pants to show her his erection.

“Uh…”

Was she familiar with the term 69? She grimaced at the penis far larger than those three men’s, her own crotch being in front of his face, and the embarrassment of having placed it there herself.

“What a nice view. Come to think of it, this is your first time doing this, isn’t it? Heh heh.”

It could be easy to forget since his eyes were normally drawn to her long legs, but she had a nice tight hipline. Now that it was right in front of his face, he could not help but slap her ass. That first-rate trainer was actually aroused for once.

“Lick it. I know I have taught you how.”

“…Okay.”

She restlessly wiggled her slapped ass while obediently opening the pink lips she had just finished washing repeatedly.

The biological disgust at putting that in her mouth was apparent on her face, but…

“Nmh.”

She shut her eyes and swallowed it with an almost mechanical lack of hesitation.

Shibaki smiled thinly. He had called this a lesson, but he had no intention of teaching her anything. The customers preferred when a girl like Koishi had amateurish technique and he could not care less about technique when faced with the pleasure of her soft lips tightening around his penis head. That was more than enough to make up for the awkward dancing of her damp tongue within.

This was his goal today.

“It’s got a lewder color than when you were a virgin. Have you acquired a taste for cock, you slut? I bet you’re enjoying all this sex by now.”

“H-hat’s not hrue.”

“Oh, really? This wet pussy begs to differ.”

He used both hands to spread the labia and reveal the pinkness within. She gave a start at the chilly air on her sensitive flesh and he worked to part the sticky flesh inside.

“You’ve started to like having a cock in here, haven’t you?”

He spread the hole as it tried to tighten. She had washed herself, but the stench of the three men’s cum wafted out from there.

He stirred up the soaked folds within, and…

“Nhhhh, ah, th-that’s…ahn.”

He gently licked her clitoris.

A first-rate trainer like Shibaki had learned she was most sensitive there when he had first touched her on that first day. Until today, he had intentionally avoided much stimulation there and focused on vaginal sex, but…

“There’s no denying it with all these sticky juices flowing out. I’ll be using this today. Heh heh heh. Let’s hope you can still move your hips afterwards.”

The soft bead looked like it would be hard to grab, but the trainer accurately caught it between his lips. Now was the time to show off his technique as a natural lady killer.

He could probably put these skills to use in playing a wind instrument. He rapidly wiggled his tongue every which way.

“H-hyahhhhh!”

Before long, Koishi’s hips, back, and then entire body began to convulse in time with his tongue.

But he showed no mercy. His fingers kept her vagina spread while it tried to squeeze shut with her convulsions and the persistent screwing movement of his tongue attacked her clit.

“Ah, ah, ahhhhn! St-stop!”

“Don’t stop sucking. What kind of selfish whore forgets to pleasure her customer?”

He stopped only for as long as it took to give that order. And that gap was only used to create a rhythm to the pleasure so the stimulation did not become painful.

“Ah, ahhh…wait, no…I’m going crazy!”

Her cute butt tried to bounce up and escape, but his hands held it firmly in place.

She had no way of escaping the great vortex of pleasure created by the screwing motion of his tongue. She could only send a rippling motion through her vaginal flesh and squeeze her asshole shut in front of his eyes.

“Ahhhhhhn! Ahhhhh, yessss!”

Something other than despair filled her cries.

It was all progressing as the trainer wanted.

There was only one way to escape. The nerves of the clitoris were sharp but only on the surface. Just like the pain of an injury could be reduced by convincing yourself it did not hurt, you could reduce the electrical signals known as pleasure by rejecting and suppressing that rising sensation. In other words, it was easy to “bear with it”.

But Koishi did not know that, so she was at his mercy.

This carnal pleasure should have been shallow, but she subconsciously welcomed it.

She was likely unaware of it herself, but some deep part of her had decided to accept the pleasure instead of rejecting it.

That emotionless girl from a few days ago could have endured this, but now it had a dramatic effect on her. This was the result of the training, so the man smiled in satisfaction.

“Focus on that sensation. You will soon receive that feeling you love.”

“Ah…”

He attacked her verbally as well.

Never stating anything explicitly was something of an agreement they had between them, but what was the final result for her in everything he did?

And at the same time…

“Ahh…ah, ah, ah, ahhhhhh! I’m…going to cum. I’m really going to cum!”

Announcing that when it happened was her end of the contract in which he gave her this pleasure over and over. The act had been imprinted on her, so she naturally raised her voice.

She even pushed out her hips toward the man. That pose was just like a wild leopardess, so it was simultaneously beautiful and primitive and she could not restrain the demands of her instincts.

The extreme pleasure had implanted the trainer’s teachings within her to the instinctual level.

The trainer gave one final lick and then squished the clit with his pointed tongue tip.

“~~!”

She gasped like a switch had been pressed.

“Ah, ahh, ah, ah…”

She had no idea how embarrassing an act she was engaged in as she pushed her beautiful butt against the man’s face.

“Ahhhhhhh, I’m cumming, cumming, cumming!”

Her voice echoed through the room as she announced her climax.

The girl’s clitoris trembled like the saliva still coating it was enough to provide pleasure and her shoulders trembled along with it.

She was only half conscious and she collapsed limply onto the bed once she was removed from the 69 position. The convulsions of pleasure disturbed her breathing before she regained consciousness and that showed just how intense a climax it had been.

“That was a clit orgasm. I’m sure a slut like you can’t wait to try that out again. Well, not to worry. I’ll make sure you are so hooked on it you can’t get to sleep without one of those.”

The man smiled as he lay on top of her in the missionary position.

The tingling of climax still lingered with her, so now was the time. He had said this lesson was about her blowjob technique, yet he pressed a barely-sucked penis against her twitching vagina.

“But something even greater can be found in the female body. You already know what that is, don’t you?”

“Ee…”

“A vaginal orgasm.”

“Gh! Ahhhhhhhhhhhn!”

He pushed all the way inside that decently loosened-up vagina. He had made sure to keep spreading it even while stimulating her clitoris, so it accepted his giant thing without tearing.

“Ah, ah, ah.”

But even after three days, she was still not used to that great size. She was still not mentally prepared, so her eyes widened and she writhed in shock.

But he shoved it in all the way to the base regardless.

“Surely you’re used to my size by now.”

“Ah, no, it’s too big. I can never…get used to it.”

“Whatever you might think, your slutty pussy is happily devouring it. Heh heh. Your clit even perked up again as soon as I put it in.”

She was actually just as tight as on that first day and the innocent folds were biting down on his penis hard enough to make penetration difficult, but he confidently pushed right through all that.

As innocent as her vagina might be, her mind was a different matter. He knew the soul of a sex slave had begun to take hold deep inside her.

And her promising masochism was powerful nourishment for that soul. She instinctually wanted men to treat her more roughly and to be remade.

“You are my slave. Do you understand that, Koishi?”

“Ah…”

When he looked her right in the eye and said that, she looked away with a complex and somewhat bashful look.

She had not fully accepted it, but he could tell some portion of her had accepted it.

“Ahh, ahh, it’s so thick, ahhhh, so thiiiick!”

She stretched out her back to bear with the sensation of it pushing inside her.

And the flesh inside her sucked at it with even more stickiness than before.

The clit orgasm must have worked wonders. Her body was begging for the next pleasure from this invader that always brought her to climax.

He had called her a slave and her vagina was remaking itself to match.

“Heh heh heh. Good girl.”

Confident he could move on to the next phase, Shibaki chose not to thrust and instead embraced her slender body while they were connected.

“Ah…wh-what are you doing?”

This unexpected embrace caused her to blush in confusion.

The way her vagina tightened a bit showed that she actually liked this. He kept his hips motionless and waited for her internal flesh to grow fully accustomed to the penis.

But he had to move some, so he slowly moved the head shoved inside her.

“This is your womb. Can you tell?”

“Eh? Ah, hh.”

The previous sex had been too overwhelming for her to notice even if she had felt it. She looked like she could hardly believe this sensation of someone touching her in that deepest part.

“There are no nerves in this area. That means no pleasure or pain.”

He moved his cannon as gently as he could to send a vibration into that dead end.

“But focus on your womb. I called it a vaginal orgasm and you can indeed cum without nerves. That is the lesson you must learn.”

“Vaginal…orgasm.”

“Once you learn this, there is no going back. Heh heh heh. You’ll be addicted to cock.”

“But…”

A dark pink flush covered her face that looked surprisingly youthful when viewed head on.

He sensed fear, anxiety, and just a bit of expectation in her angled eyes. Her blushing face showed the slightest hint of desire for the pleasure she would feel if she succumbed to this training and became a sex slave who had made her sexuality her entire purpose in life.

“First, learn the feel of my cock. I will teach you the pleasures of your body.”

“Yes…Shibaki-san.”

When he kissed that cute look on her face, she did not resist and in fact gave a snort and accepted it.

“Nh…nhh.”

“Heh heh. Lick this.”

He stuck his tongue in her mouth.

How thoroughly she had washed out her mouth in the shower room showed that she considered her mouth her last line of defense. She had given up on her vagina, but that was the one thing she refused to allow.

So if he filled that himself…

“Mhh…hn, ahhn, ahh, yes.”

The pleasure from her lower stomach must have been melting her mind. She opened her mouth without resistance.

She gulped while taking his tongue in her mouth and licking back at it.

He knew she had given in. Her final fortress had fallen.

“Ahnnn.”

He resumed thrusting while embracing and kissing her.

There was nothing to do as a trainer at this point. He lifted up the top of the head and aimed for her G-spot.

After the clitoral torment, the erogenous zone on the reverse side of there was quite swollen too. She could not bear his targeted attack there.

She clung to his shoulders.

“Ahhn, ahn, Shibaki-san, ahh, Shibaki-san.”

Embarrassed but defeated sweet breaths escaped her impertinent little nose.

“Can you feel it? Your womb is receiving a man. You can tell, can’t you?”

“Y-yes.”

Her flesh tunnel moved hotly while that long shaft filled it.

The incredible tightness stirred up Shibaki’s primal male side while he repeatedly jabbed at her womb and shook all of the flesh within her.

“Ah, ahn, ahh, wait, ahhh, wait!”

As his thrusting intensified, Koishi could no longer keep the pleasure out of her voice.

She had a childish body with still-growing breasts, but she was already a fully-fledged masochist slave. Her long legs wrapped around his hips without him having to tell her. The fresh folds of flesh wriggled and squeezed lovingly at the invader. They stroked and licked it.

“I can tell you’re enjoying this. It feels good, doesn’t it?”

In a good mood, Shibaki sent juices flying as he drove the thick stake inside her.

“Ahhhn, yes, Shibaki-san, it feels…good!”

She said that in a thankful way and rolled her hips around the best she could in her position.

“You’re completely hooked on the cock, aren’t you? What a horny slave.”

“Ha ha. Sorry. Ahh, I, I…”

“Heh heh heh. You want to cum, don’t you? You want to experience a vaginal orgasm and become mine, don’t you?”

“Uuh…”

“Well, do you? Hm?”

He sped up his thrusting as he asked and the girl embarrassedly but clearly nodded.

He rewarded her by burying the head in her G-spot again and rubbing at that spring of sexuality.

“Ahh, no, wait.”

“Heh heh heh. No more waiting. Just tell me what it is you want.”

“Ahh…I-I want to cum!”

She finally gave in and said it.

“Who do you belong to, Koishi?”

“I belong to you, Shibaki-san. I am your slave …ahhhn! Yes, ahh, thank you so much for making me feel so good!”

Her targeted G-spot returned the favor by wriggling against his penis. The flesh spoke her thoughts more eloquently than her mouth.

“I’m cumming, cumming, cumminggggg! Ahhhh, I can’t stop it!”

This was clearly different from the previous clit orgasm or any of the climaxes she had experienced from sex before. Pleasure seemed to explode from the center of her body below her navel and her entire body convulsed.

She cried out loud and her slender body bounced on the bed.

When he felt her arms and legs continue to cling to him throughout, the trainer knew he had just witnessed the birth of a new slave.

It had been a while since a job turned out this well.

The satisfaction put Shibaki in a good mood, so he went for a second round and drove Koishi to another orgasm doing her doggy style. While she cried out from the long climax, he teased her anus, filling her voice with even more sweetness.

“What are you? Who do you belong to?”

“Ahhn, I am a slave. I am a slave meant to give you my pussy.”

She did not hesitate to respond the way he had taught her to before.

After experiencing a vaginal orgasm, a woman’s body would learn that sex is a wonderful thing, even if her mind was not consciously aware of it. And she would have a favorable opinion of the penis that gave it to her as well as the person it belonged to. Or at least, that was what Shibaki believed after more than two decades indulging in women.

He saw it again today. He pulled out after giving her a third orgasm, but he did not let her rest. He once more said it was time for a blowjob lesson and stuck his rod in front of her face while it was slick with her own juices.

“Nh, nmhn…ahh, it’s so big.”

“Heh heh heh. This is what you were enjoying so much a moment before. Experience it with your hands and mouth too.”

“I can’t believe how big and manly it is.”

“Impressive, isn’t it? Heh heh. You looked so reluctant before, but now that you’ve cum a few times, you can’t get your tongue off of it.”

“Ahhn, it tastes so good.”

The triple orgasm must have still been lingering with her. She had a dazed look on her face as she stared at something that looked too large to fit in her mouth.

Her stickily crawling tongue still did not know what to do, but her passion was clearly different from before. Her eyes were so damp as she stared at it that her arousal was almost palpable.

“Nhn, ahh, Shibaki-san. It’s so wonderful, Shibaki-san.”

Shibaki shut his mouth as he watched her subconsciously wiggle her butt in a figure eight while licking happily at it.

He had nothing more to teach her today. Nurturing her penis awe like this was more important than teaching her specific technique.

“Heh.”

He realized he had completely forgotten about training her during all this.

For a trainer like him, his training was a way of showing love. Although it was still something he did to turn them into a product.

Today, he had been drawn into it himself. This girl’s bewitching aura was throwing the experienced trainer off his game.

How long had it been since he had failed to control this expression of love, he wondered with a cynical smile.

“What is it?”

Koishi noticed his smile and asked what it was about.

“It’s nothing,” he said with a shake of the head. “So. Do you want my cock again already?”

“Ahn…yes.”

“Say what it is you want.”

“Ahh, I-I want it. I want your massive cock inside my pussy. Please put it inside me. Please make love to me again.”

“Heh heh. Fine, then. Now, climb on top of me and put it in yourself this time.”

She obediently spread her legs on top of him. The brief flash of shame on her face as she did so stirred up something inside him again.

This was her first time doing it on top, but she managed the insertion on Shibaki’s instructions. Once it was inside her, her lower stomach trembled so much it looked like she nearly came again.

Shibaki took her hands to support her and decided to simply enjoy the sex instead of training her. Their fingers naturally intertwined like they were lovers.

“Ahhn…Shibaki-san.”

The lewd way they held hands was enough to melt her rational mind away and she narrowed her eyes happily.

“I’m cumming, ahh, I’m cumming again already.”

“That is fine. Enjoy it as much as you want.”

“Okay, ahn, ah, ahn.”

A masking intelligence had resided in the girl’s eyes since he had first met her, but when it fully melted away here…

“Shibaki-san, being trained by you has made me…has made Lav so very happy.”

For a moment, she let slip an unfamiliar name. But…

“I’m going to cum soon too. Here goes.”

“O-of course. Ahhn, I’m cumming too!”

The man was too focused on his own desire as he watched Koishi rising toward climax.

Shibaki fired his cum bullets as they were squeezed out by a vagina that remained painfully tight even after so many orgasms.

They both felt the throbbing in their bodies.

“Ahhh…thank you so much.”

At the very least, he sensed no falsehood in the girl’s words.