"What's happening..."

Nancy moaned in a daze, feeling that if he rubbed her like this a few more times, she would completely lose control.

"Big sister, you're under too much pressure. You need a proper release."

Luis fondled his sister-in-law's pert, beautiful breasts, unable to get enough. He knew this was the Lust System's doing, and he was amazed by her passionate response. A long-standing issue of frigidity seemed to be resolved just like that.

At the same time, he understood that his sister-in-law was a proud woman. He needed to give her a way to save face.

"I suppose... so..."

Nancy's eyes were already glazed over. She couldn't control her panting and soft moans, yet she struggled to maintain some rationality, trying to prevent her brother-in-law from taking further liberties.

"Big sister, your legs are so beautiful. Let me rub against them."

"I promise I won't put it inside!"

Luis said lasciviously, licking her neck, then adjusted her pliant body into position.

The classic lie of "I'll just rub, I won't put it in" was incredibly potent. By offering this psychological pretext, Luis gave her an excuse. Nancy silently acquiesced, allowing her brother-in-law to maneuver her body.

He had her stand on the floor. Luis embraced her from behind, his hands vigorously kneading her breasts, causing Nancy's whole body to go weak. She had to brace herself against the wall to stay upright.

She gritted her teeth, wanting to ask Luis exactly what he planned to do, but held back, thinking it would make her seem ignorant.

"Big sister, keep your legs tight together, okay? Otherwise, I might accidentally slip inside."

Luis held his cock and rubbed it a few times against her trembling, beautiful buttocks. He had to admit, having a tall figure was great. When having sex with his wife while standing from behind, it was somewhat awkward.

But his sister-in-law's long, straight legs were the perfect height. Luis didn't need to bend over at all. Guiding his cock downward, he pressed it against the junction of her thighs. With a sharp thrust of his hips, his cock disappeared between her clamped legs.

It rubbed against the already soaked lace panties, feeling exceptionally slick. Most importantly, his sister-in-law was already flooding with arousal. With ample lubrication from her fluids, it felt incredibly pleasurable, even though it wasn't actual penetration.

"Big sister, you've wet your pants, you know."

Luis grabbed her breasts with both hands again, one arm encircling her waist to steady her. In a position almost identical to taking her from behind, he thrust his hips, his cock rubbing vigorously against her wet pussy through the thin fabric of her panties.

"Don't... don't ask for trouble. Hurry up and get it over with."

Nancy supported herself with one hand on the wall, the other on the bed, already feeling unsteady on her feet.

Her brother-in-law's cock was pressed tightly against her vulva through her panties, sliding back and forth, rubbing her labia repeatedly and sometimes bumping against her clit. Each contact sent such intense pleasure through her that she felt she was losing her mind.

Even though she had masturbated and experienced orgasms before, this sensation was on a completely different level. The raw, sensory thrill from her excited sex organs was unprecedented, causing Nancy's body to tremble and twitch slightly uncontrollably.

"Big sister, feels good, doesn't it!"

Luis kneaded her breasts with both hands, his thrusts between her thighs becoming faster and more forceful, slapping against her buttocks with sharp, crisp sounds.

As he spoke, he took her earlobe into his mouth, licking and sucking it, his breathing scorchingly hot against her skin.

Nancy felt she was truly going insane. Why were her ears so sensitive and pleasurable? Her husband had kissed them before, but she felt nothing, even found it slightly disgusting. Why did her brother-in-law's tongue elicit such overwhelming pleasure?

That hard cock... so rigid, like a red-hot iron rod, completely reshaping her understanding of the male member.

Each thrust, each rub that parted her labia, brought violent pleasure. Yet, her body's instincts screamed that without that flimsy barrier, an even more wondrous experience awaited.

A little bigger, a little longer than her husband's... but astonishingly hard...

Nancy had already bitten her lips, her face full of discomfort, afraid she would be unable to control herself and cry out. Her mind even fantasized about how incredibly pleasurable it would feel if it accidentally slipped inside.

"I can't take it anymore... It's so sore, stop, please stop..."

"Stop... You, no, you're insane."

Even though it wasn't actual intercourse, being clamped by her sister-in-law's snow-white, beautiful legs, each thrust rubbing against her damp, warm pussy, this wonderful sensation was already indistinguishable from real lovemaking.

"Big sister... It's so good, your legs clamp so perfectly, your pussy is leaking so much fluid again."

Luis licked her neck and thrust even faster, pounding into her harshly again and again, reaching a point where control was nearly impossible. When she began to tremble, Luis knew his sister-in-law's orgasm was approaching.

Seizing the opportunity, he forcefully turned her head towards him. Seeing her face flushed with desire, biting her lower lip in a seemingly pained expression, he immediately kissed her without hesitation.

Nancy whimpered, her head buzzing. She had never imagined a French kiss could feel this good. This time, she didn't resist coyly.

Even as Luis's tongue invaded, she actively met it, entwining with his, becoming passionate and hungry, one hand even weakly stroking Luis's arm.

"Mmm... Hnn... Sore, sore... So good!!"

Under the tide of lust, Nancy's reason had completely vanished. The exquisite sensation of having multiple erogenous zones stimulated simultaneously was driving her mad.

At this moment, Luis believed that if he pushed aside her small panties and entered her, she would definitely not refuse.

But thinking of the task's substantial reward, Luis forcefully suppressed this raging, beastly impulse. He kissed his sister-in-law fiercely, his hands kneading and pinching her sensitive nipples, the movements of his lower body becoming faster and faster, thrusting until Nancy could barely stand.

Finally, Nancy let out a moan, her eyes nearly rolling back, her entire body going limp as an intensely hot rush of orgasmic fluid soaked through her panties onto Luis's cock.

Stimulated by this, Luis thrust wildly a few more times, reaching the brink of eruption. With a low growl, he released her. Nancy, weakened by the overwhelming orgasm, slumped to the floor.

Luis somewhat roughly grabbed her hair, forcing her head up. Nancy seemed to know what her brother-in-law intended, but in her current boneless state, she couldn't resist.

The violent climax had also softened her resolve; she meekly closed her eyes, not daring to look directly at the man's glans now positioned before her face.

"Big sister..."

Luis growled hoarsely, stroking his cock, every cell in his body consumed by carnal pleasure.

Looking down at his sister-in-law, his wife's sister, her stunningly beautiful face filled with satisfaction, meekly awaiting the moment he would cum on her face.

The visual impact from this dominant position made Luis's mind go blank. He cried out, his body convulsing, his testicles contracting violently as the urethral opening released thick, white semen that shot powerfully onto her pretty face.

Once, twice, three times. With each spurt, Luis felt as if his soul was being drained.

He only knew he came a lot. Even though this was already the third time, there was still so much, a testament to his sister-in-law's astonishing allure.

He felt almost emptied. Seeing his sister-in-law's perfect visage covered in his semen, this sinful feeling of defilement was extraordinarily intense.

The white semen sullied her eyelids, her pert nose, even her lips, leaving no part of her perfect features untouched.

Admiring his handiwork, he recalled how, back when he first married, he had been awestruck by his sister-in-law's beauty. Her devilish figure and exquisite face had been the subject of his wet dreams more than once.

One could say that aside from his lovely wife at the time, every woman in the Wood family was incredibly alluring, especially his sister-in-law, whose beauty was dreamlike.

How many times had he dreamed of her kneeling before him giving him head, dreamed of covering her face with his cum, dreamed of clutching her long, beautiful legs while pounding into her mercilessly...

And now her face was covered in his semen. This sight could even be described as indescribably beautiful.

His cock, still hard after ejaculating, Luis rubbed it against her face, the glans moving to her lips, which were also smeared with his semen. The rosy, cherry-like mouth contrasted with the white semen, creating a profoundly lewd image.

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