Chapter 15: Rebecca
Chapter 15: Rebecca
Jaejin was in the monastery’s living quarters. Not the visitor’s quarters where he stayed with Lena, but the dormitory for the nuns who lived and practiced here.
Because of that, while the room was kept impeccably clean, the faint, scattered traces of daily life made his heart flutter, as if he had stepped into a woman’s private sanctuary.
Above all, the nuns here were women who, without exception, possessed striking looks and magnificent figures.
The brown-haired nun standing before him was no different; though she looked somewhat anxious, she had a gentle aura and a refined, beautiful face.
He had thought he was taking on a bothersome chore at Sinclair’s request, but this might turn out better than expected.
"I was born with the blood of both a Lust Demon and the Three-Eyed Tribe. It’s quite rare."
Even though Succubi conceive children with other races, mixed-bloods are rare. This is because a Lust Demon usually only gives birth to another Lust Demon.
The Lust Demon Race, consisting entirely of females, does not sustain its population through marriage and sex within the tribe, but through unions with other races. To preserve the species, they evolved so that the child they conceive inherits only the Lust Demon’s blood.
"I don’t particularly resent it. Being able to see into people’s hearts is convenient sometimes, and I’ve benefited a lot from inheriting my father’s... good looks."
To conceive a child of one's own—that was an instinct engraved into a Lust Demon’s body, a necessity for the survival of the race.
However, the Lust Demon who was her parent had not done that. That Lust Demon was debauched and had become infatuated with a woman of the Three-Eyed Tribe.
And so, that Lust Demon had puffed up her own tail to create a pseudo-penis and impregnated the Three-Eyed woman with simulated semen created from her own mana.
The Three-Eyed woman gave birth to a child. A truly rare mixed-blood Lust Demon who carried half the blood of a Lust Demon and half from the Three-Eyed Tribe—their beloved child.
"Rebecca. I like this name my parents gave me. Everyone in the Demon Race treats me well without discrimination. But..."
Rebecca lowered her head. It seemed her real troubles were only just beginning.
Sinclair was worried about Rebecca’s particular lack of self-confidence.
Though several years had passed since she first arrived as a nun, she still hadn't overcome her chronic insecurity, which was why Sinclair had asked for Jaejin’s help.
The nuns of the Beni Monastery needed the ability to confidently enthrall men. Only then could those who fell into a state of sexual dependency serve the Demon God Cult.
"I’m still scared of hearing the inner voices. It feels like I’m being forced to see things I don’t want to see... Especially why everyone is so obsessed with looking at my thighs..."
Her problem stemmed from a lack of harmony between her abilities and her mind.
There was no such thing as a Three-Eyed person who felt uncomfortable looking into others' hearts, nor a Lust Demon who disliked the murky desires of men.
If there were a fish that hated water, it wouldn't be able to survive properly. Similarly, Rebecca harbored a deep-seated aversion to her innate abilities.
"What should I do, Demon Lord Candidate...? I don't want to be a burden to everyone like this."
Because her body and mind were out of sync, she couldn't work efficiently. She felt a sense of helplessness from her repeated failures, which led to her ruining her work again—a vicious cycle.
Considering Sinclair’s intent in sending him here and what he was capable of, there was only one conclusion.
"Oh? Why are you coming closer?"
Rebecca could not read Jaejin’s mind. The power of the Three-Eyed Tribe does not work against an opponent of equal or higher status.

She might have been holding a conversation by reading thoughts until now, but her half-baked Mind’s Eye was useless against Jaejin, who had unleashed his demonic power.
Using his enhanced strength, he pushed Rebecca down onto the bed in one swift motion. She tried to move in a panic, but she was easily suppressed once he grabbed her wrists.
"I’m the same as you, Rebecca. It was pretty tough for me too, having demonic power enter a human body. I think we’re two of a kind. So,"
The point was to fix her mindset. She just needed to regain her confidence as a Lust Demon and a member of the Three-Eyed Tribe so she could utilize her abilities to the fullest.
To achieve that, there was only one optimal thing Jaejin could do. This was likely the solution Sinclair had in mind.
"I’ll show you just how attractive of a woman you are."
Jaejin’s cock, which had grown large and thick after he unleashed his demonic power, became erect toward Rebecca’s body. Since having sex with Lena, his constraints had been relaxed, allowing him to draw out his power as long as his partner was of the Demon Race.
"Hiiieek..."
A 25cm giant penis was thrust toward the face of the reclining Rebecca. Despite her shock, perhaps due to her nature as a Lust Demon, she was already catching the scent clinging to the cock.
It’s musky, but addictive...
It was a majesty entirely different from the monks she had experienced before—a scale that reminded her of the physical difference between an adult and a child. The scent of a male filling her nasal cavity piqued Rebecca’s curiosity.
She carefully touched the glans with her tongue to taste it, then took the head into her mouth to savor it slowly.
As if her braided hair draped over her shoulder was in the way, she tossed it behind her back and began to suck on the glans, coating it in saliva.
"It’s delicious... shlurp, chu."
The sensation of his glans being enveloped by a moist mucous membrane and softly sucked made a groan escape even from Jaejin’s mouth, despite his daily training.
However, if he backed down here, his confident words would become incredibly embarrassing.
When he nonchalantly pulled his cock out of her mouth, which had been gripping the glans tightly, Rebecca licked her lips as if disappointed.
Her lustful display would likely help her regain her confidence. Lowering his body, Jaejin looked down at her pelvis, which was barely covered by a thong beneath her pulled-up nun’s habit.
His mind naturally began to imagine the pleasure of thrusting into those plump, fleshy thighs and that wide, flared pelvis.
In contrast, her waist was remarkably slender, showing how physically blessed her Lust Demon heritage made her.
The thong in the middle couldn't even cover her vulva completely, revealing the thick outlines of her flesh on either side.
As he pushed the panties aside, Rebecca’s pussy was revealed, brimming with juices. Seeing it in a state where it looked ready to burst at a single touch made Jaejin’s own sexual desire boil over.
"I'm going in, Rebecca."
Rebecca looked at the giant penis—the manifestation of Jaejin’s intense desire—and seemed to tremble with a hint of fear, yet she also appeared to be secretly anticipating it.
Jaejin was equally nervous. After all, this was his first time having sex with someone other than Lena. Especially being the one to proactively prepare everything from start to finish.
She was wet enough from the blowjob, so no other foreplay was necessary. Jaejin aligned his glans with her labia minora and pushed his hips forward.
Sliding through the sticky, wet interior without the slightest resistance, Jaejin’s cock was buried to the root in an instant.
"This... ♡ It feels strange... ♡"
Rebecca climaxed the moment he inserted, her head snapping back. She was reaching a peak instantly, overwhelmed by a pleasure she had never experienced before.
Rebecca’s vaginal walls, which could only be described as "fleshy," felt soft and pillowy, providing a different kind of pleasure than Lena’s.
If I let my guard down, I’m going to blow it...!
Jaejin grit his teeth at the sensation of the delightful flesh that felt like it would make him ejaculate the moment he relaxed. Even though he’d already received a blowjob, it would be a blow to his pride if he finished now.
As he calmly began to thrust his hips back and forth, Rebecca, unable to escape the afterglow of her climax, couldn't steady herself against the waves of pleasure and kept repeating for him to stop.
But Jaejin knew. He knew that with every thrust, vaginal fluid sprayed out and soaked her crotch, and that she was leaking juices to make it even easier to accept his cock.
"Not there... nooo... ♡"
Rebecca was rejoicing. She was being relentlessly pierced in erogenous zones that the monks' meager cocks could never reach, feeling the man put his weight into pistons that felt like they would crush her womb.
"I'm going... ♡ Slowly... haaang ♡"
Rebecca came once more, but Jaejin did not stop his hips. Thwack, thwack, thwack. The sound of flesh hitting flesh echoed from the bed with every thrust.
"You say no, but you're getting soaking wet...!!"
The fluid she sprayed as she climaxed did more than just stain their thighs; it dripped down, drenching the bedsheets.
"Th-that’s... because it feels good... ♡ Hngh... ♡ I’m going again... ♡"
As his swollen glans scraped against the vaginal walls and pulled back, her G-spot was raked, causing her body to shudder as she reached another climax.
In the aftermath of her peak, Rebecca, whose goat horns—usually hidden—had emerged from between her brown locks, lay face down on the bed, moaning incessantly.
Jaejin was also nearing his limit. Along with the throbbing of his cock, he could feel the semen traveling from his testicles up the urethra.
His thrusts grew more powerful alongside the surging urge to ejaculate. As he entered the final spurt, Rebecca, seemingly wanting to taste more of the pleasure, urged him to finish.
"Inside... cum inside me... ♡"
"I'm coming...!"
Splurt. A thick torrent of semen poured into Rebecca’s vagina. Being enveloped by those tender vaginal folds while ejaculating was the height of luxury.
Barely emerging from the post-nut clarity, Jaejin shook off the vaginal flesh that tried to cling to him and looked at Rebecca, who was still lost in the afterglow of her climax.