Chapter 173: Yuma
Chapter 173: Yuma
Jaejin witnessed a truly rare sight. It was the sight of his cock being completely buried—something he hadn't seen since his demonized member had begun to grow in size.
When Grisha’s Cow-Girl breasts were still, Jaejin’s glans would peek out, but when her breasts were pressed together from both sides, their shape distorting, his long cock was entirely swallowed by the flesh.
The pressure wasn't overwhelming, yet the sensation of his entire shaft being buried in soft breast meat and gently squeezed tested Jaejin’s limits with incredible speed.
His cock throbbed violently, pulsing with heat. Grisha could feel it deep within her cleavage—the way it swelled as it held semen in the urethra, preparing for ejaculation.
She felt a sense of ecstasy from the thick scent of a male, and the deepening scent of semen tickled her highly developed sense of smell.
Jaejin, his buttocks resting on her knees, had his legs wrapped around her waist. Grisha knew this was an instinctual reaction—his body trying to anchor itself to endure the excessive pleasure.
Slowing down her rubbing, she looked at the face of the one she was serving. The face of the beautiful boy, distorted by pleasure, stood in stark contrast to Uin’s wild and masculine appearance.
Seeing this reaction for the first time sent a tingling electric shock through her chest, leading his cock toward ejaculation even faster.
"Please don't hold back too much. Come now, splurt, splurt♡ Please, spill it all over my humble, vulgar breasts...♡"
Driven by Grisha’s urging, Jaejin could no longer contain his excitement and began to spray his semen. Vruuuut. The semen, shot upward toward the ceiling, rained down directly onto her breasts and face.
Grisha felt the results of his ejaculation as it stained her black hair white.
"My... how can there be such a thick and wonderful fragrance..."
Delighting in the thick concentration of the semen and the overwhelming masculine scent, she compared the ranch owner’s seed to that of this noble guest.
"The taste... is better, and the scent is better too... It's so thick... Gulp..."
The quality was so superior that it felt like an insult even to compare them; it felt even more special than when she had received it by the stream.
"Mo-more... please, Ms. Grisha..."
"Ah, noble guest. There is no need for such polite speech with someone like me."
She completely discarded her previous attitude, treating Jaejin with extreme politeness as if he were a different person entirely, while lowering herself.
The ecology of the Cow-Girls, who judged people solely by their genitalia, made them seem like even greater "cock-fundamentalists" than the Lust Demons.
"It's already become this big and hard... If it wouldn't be rude, may I ask how many more times you can ejaculate?"
"I... I haven't really counted since the middle... but I could probably do it a hundred more times without an issue..."
Grisha’s eyes widened at the number one hundred. Jaejin’s ability was so far beyond common sense that she might have doubted him, but she had no choice but to accept it given the sight before her eyes.
After all, the way it had regrown to such a monstrous size within seconds of ejaculating such thick semen was already impossible.
That firmly standing cock provided her with more convincing proof than anything else.
"Th-then, noble guest...? Once this service is over... would you be willing to hold me?"
"I... I also thought Ms. Grisha’s body was incredibly erotic... I want to do it..."
Convinced that the greatest opportunity of her life as a Cow-Girl had arrived, Grisha smiled lewdly.
With the belief that she would be reborn today while receiving the ultimate pleasure, she moved her breasts once more.
Her cleavage, now sticky with semen, began to stroke Jaejin’s cock even faster. Thwack. Thwack. Grisha dropped her breasts against Jaejin’s thighs as if slamming them down.
The heavy weight bearing down on his cock was so intense that an ordinary member might have been crushed or broken.
"From now on, my breasts belong only to you... Please, use them as much as you like...♡"
Naturally, there was no way Jaejin’s cock would break from such a thing; instead, the violent impact of flesh was transformed into a powerful stimulus delivered straight to his shaft.
Squish. Squish. The visual stimulation of giant "mochi" being crushed was terrifying. It was a mystery just how lewd her race would become if they went all the way and she turned into a Lust Demon because of Jaejin.
Grisha enjoyed the sight of Jaejin moaning piteously. Having lived her life seeing only Uin’s masculine side, seeing a male so overcome with joy and unable to control his stimulation was a first for her.
As she continued her foreplay, she began to understand the spots and methods that elicited the best reactions from Jaejin. For example, if she squeezed the cock from both sides and then pushed upward as if wringing it from below...
Vruuuut. As expected, Jaejin’s cock couldn't withstand the pleasure and erupted in a fountain of semen.
Despite this, seeing it recover immediately and maintain the same size made it seem like he could fire off as many rounds as he wanted.
"Noble guest, how were my breasts?"
"Sooo... good... Grishaaa..."
It was a reaction from a man she had never seen before. She took great pleasure in seeing Jaejin’s face melt as he acted as if he were depending on her.
More, I must enjoy this reaction more. The Cow-Girl’s large breasts shook rapidly. Her breasts, gripping his cock from both sides simultaneously, began to wring it out repeatedly, and Jaejin’s cock ejaculated over and over again.
Splurt. Vruuuut. Grisha enjoyed Jaejin’s reactions, unconcerned that her body was being stained by the repeated ejaculations.
With every repetition, Jaejin was dyed in pleasure, and a wicked thought took root in her heart. Her service using her breasts gradually shifted into an act of using her breasts to covet his cock.
Grisha’s heart raced at the sight of Jaejin, who looked completely like a prisoner to his own member. How long had it been since sexual activity had been this enjoyable?
Aside from the pleasure itself, it was the first time she had been so excited by the act itself. She hadn't realized that looking at Jaejin’s pathetic, masculine face would feel this good.
Furthermore, she hadn't known that a man could be such a fragile creature. She never expected him to act so submissive just from being teased a little while she held the initiative.
To enjoy the situation even further, she made a proposal to Jaejin.
"Um, may I call you Master Jaejin? Yes, Master Jaejin. I was wondering if we could move on to the next part of the service...♡"
Jaejin was already nodding at Grisha’s lewd face. He was stained with the desire to enjoy not just her breasts, but her entire female body.
Forgetting that he was currently isolated in a remote place, Jaejin fell completely for Grisha’s body and lay down on the bed as she guided him.
Looking up from below, her breasts provided an even more overwhelming sense of scale than they did from an angle.
Having just been teased by that semen-stained cleavage, Jaejin’s body vividly remembered the pleasure that massive size provided.

Furthermore, her soft, moderately fleshy belly ensured her fullness didn't look excessive, and her female parts, revealed beside the spotted fabric, flaunted her sticky, wet inner flesh.
Looking at the Cow-Girl’s incredibly soft flesh, Jaejin’s cock swayed, its veins bulging prominently. A submissive race that yielded to a long cock was the perfect opponent for Jaejin.
The Uin ranch owner surely had a giant penis, but he was no match for Jaejin. Jaejin’s long pole would widen the places his predecessor had touched and gouge deep into the places he had never reached.
Jaejin looked up at Grisha as she prepared to take his cock, filled with anticipation. Her face, stained with lust, was clearly expecting the pleasure a giant penis would provide, and soon she lowered her body and began to swallow his cock.
Creeeak. Creeeak. As the cock entered, stretching the vaginal canal that had been adjusted to the ranch owner, the plump vaginal muscles rubbed against the mucous membrane. She trembled, and the moment he reached the curve before the womb without much trouble, he began to ejaculate.
Vruuuut. The fleshy vaginal walls began to squeeze, teaching the cock—which had only been teased by mouth and breasts all day—what true pleasure felt like. Splurt. Vruuuut.
While Jaejin’s body bounced back as he ejaculated upon insertion, Grisha let out a cry of joy as the glans gouged into places that had never been touched before.
"Haaah♡ The cock... is gouging deep inside...♡"
She was more delighted than ever by the insertion that seemed to fill her entire stomach. The sensation of her womb being pressed from below and her vaginal canal being rubbed everywhere by his cock was a new world she had never experienced.
The unknown sense of elation added to this gave her the confidence that she could do anything. A strong confidence that she could do what she wanted, how she wanted. For example...
"Master Jaejin, how is it? Does the Cow-Girl’s pussy feel good?♡ I like this cock very much♡"
Grisha asked for his impressions of the insertion. However, squelch, squelch, Jaejin couldn't form proper words due to her movements, which continuously stimulated his cock even after ejaculation.
"Hehe, you seem happy. I'm happy too♡ To think I can continue such a pleasant thing every day♡"
"Every day... you say... I have a place... I have to go back to..."
Jaejin noticed the dark ambition blooming in Grisha’s heart. After tasting Jaejin’s cock, the once-diligent Cow-Girl intended to keep him at this ranch so she could continue to taste this pleasure.
It was an action that contradicted the request of Romi, who had brought Jaejin here, but she seemed sincere as she increased the speed of her pistons to persuade Jaejin through pleasure.
Slosh. Slosh. Her breasts swayed violently every time she moved her body up and down. The semen on her breasts had been absorbed at some point, but now breast milk began to leak out and splatter, capturing Jaejin’s gaze.
"Come, spill it♡ I'll let you spill it in my pussy every single day until you're satisfied♡ So please, become the new master of our ranch♡"
"I can't... do that..."
Grisha leaned forward, bracing herself with her hands on the ground as she continued her filthy movements. The benevolent and maternal figure from before was nowhere to be seen, replaced by a vulgar swaying of hips.
The culmination of it all was a dizzying temptation that Jaejin could never refuse.

"Oh my, you say that, but your body is so honest♡ Here~ here is your food~♡ It's a special concentrated breast milk just for my baby♡"
Having completely figured Jaejin out, she brought her dripping nipple to his mouth. A temptation that Jaejin could never win against was thrust before him, and it was instinct to take it into his mouth.
"Slurp. Slurp."
"Hehe, how cute♡ This is the first time I've had such a cute ranch owner♡ Oh my, do you want to spill it again? Splurt♡"
It was so sweet and delicious—more so than any Lust Demon, including Lena, and more so than any other Cow-Girl—that once Jaejin tasted it, he couldn't regain his senses and had no choice but to keep sucking the nipple.
The new species born between a Lust Demon and a Cow-Girl, later to be called a "Yuma" (Milk Demon), used her weapons to force Jaejin into a fight he could never win, and it seemed she was on the verge of success.