Seeing such a stunningly beautiful and alluring creature, Luis simply smiled, without overthinking, he went straight to her, embraced her, and kissed her. Nancy moaned softly a few times but still compliantly extended her little tongue, allowing her brother in law to taste it.

They ignited like dry timber meeting a fierce flame, groping each other's bodies over their clothes, only stopping when their mouths were sore from kissing.

Luis looked at his sister in law in his arms and said tenderly, "Big sister, you had your pleasure this morning. Now it is time to compensate me."

"Wretched scoundrel, it cannot take too long."

Nancy's delicate hand grasped his cock and began stroking. It had hardened completely just from kissing.

This was the ultimate compliment to her allure.

"It is fine, I heard everything you said in the corridor earlier."

Luis grinned wickedly, licking his lips as he said, "I will behave and not touch you, big sister. First, give me a blowjob for a while. After I cum, I have a surprise for you."

"Bastard, always dreaming... who wants your surprise."

Even as she said this, she casually picked up the hair tie on Lily's desk and tied up her disheveled hair.

Her eyes seductive as silk, she looked at Luis and said coquettishly, "You bad boy, cum quickly, otherwise I will not serve you."

"You promised to compensate me this morning. Later, when I cum in your mouth, you have to swallow it and lick me clean."

"Go to hell..."

Though her words were curses, they seemed like tacit consent. As Luis pressed down on his sister in law's shoulders, she slowly moved downward, naturally kneeling between her brother in law's legs. She grabbed his cock and began licking the head.

When it came to oral sex, there were really only two key points. Technique was only secondary; the most important was definitely whether one put their heart into it.

When his cock was enveloped by her small cherry like mouth and she began gently sucking, Luis could not help making comparisons in his heart.

In terms of technique, actually, both Yana and his mother in law, Ruth, were quite inexperienced. Technically speaking, they were not very skilled, but their age and that very inexperience brought an unparalleled delight.

Maria also lacked technique and experience, but she was especially obedient during training, which was her advantage.

Comparing further, the one with the best technique was actually Lily. For her, giving oral sex was almost a hobby; she was very engaged but too shy to study materials to improve her skills.

As for his sister in law, Nancy, she always had to maintain her aloof, cool demeanor, so her efforts could only be described as average.

Compared to all the women Luis had received oral sex from, whether in terms of technique or dedication, the number one was actually Lily. There was some strategic reason he did not climax in her mouth every time.

Every time, Luis felt incredibly good, but to achieve his goals, he held back from erupting fully in his wife's mouth.

Overall, the current second place was Chloe.

The first time he had sex with her, her skills were outrageous, but she genuinely studied and surprised Luis every time.

Mainly influenced by the Affection Through Familiarity plugin, she was now exceptionally devoted. To put it bluntly, if Luis restrained his urges and just lay there, she would lick him tirelessly, completely unaware of fatigue.

Compared to them, Nancy's oral skills were actually the worst, and her attitude was the least committed. Every time, she was reserved and awkward.

But one could not resist the intense visual impact of seeing that world shaking, exquisitely beautiful face between his legs, those rosy, cherry lips wrapped around his member.

The psychological pleasure was the main thing. Watching his usually arrogant, lofty, ethereal fairy like sister in law kneeling beneath him, giving him a blowjob—for Luis, this feeling was supremely wonderful.

"Big sister, lick my balls too..."

"You are so demanding."

Nancy mumbled indistinctly, but still switched to using her hand to stroke him, while one hand caressed the sensitive area on the man's inner thigh.

Her tender red lips traveled all the way down, and she began licking his balls to the sound of the man's appreciative moans, making Luis's thighs curl up in pleasure.

For both men and women, sexual response was the best teacher. Though his sister in law was stubborn with her words, through training, she had learned how to make her brother in law feel better.

Just then, Luis's phone vibrated. He had set it to vibrate earlier after overhearing their conversation.

"Hey... brother in law."

The speakerphone activated, and Daniel's lazy voice came through immediately:

"Luis, where are you?"

"I'm getting a massage outside."

Luis grinned lewdly, stroking his sister in law's pretty face.

Daniel's voice not only excited Luis, but Yao Xin also felt her wicked, surging desires intensify upon hearing her husband's voice. Even though she felt apprehensive and nervous every single time, she had to admit that this kind of affair was like a demon's temptation. She knew it was wrong, yet she simply couldn't resist the temptation of falling deeper and deeper into depravity.

Luis lifted her chin. Nancy shot him a look of shame, but she still obediently took his cock into her mouth, beginning to suck it with her rosy little lips. Her technique was the most inexperienced, but she was slowly learning. Now, when she actively took the initiative, she could manage about half its length. As she sucked, the wet, kissing like sounds were unavoidable.

Luis moaned in pleasure, stroking his sister in law's pretty face approvingly.

"A massage??"

Hearing such sounds, Daniel, a seasoned veteran of such scenes, said suspiciously, "You're not getting a 'half service', are you?"

In the terminology of Bathek City's sex industry, intercourse is considered 'full service', while 'half service' means making you ejaculate through oral sex or a breast job. Both follow a specific service process and are particularly enjoyable.

Luis originally wanted to deny it, but looking down at the ethereal beauty of his sister in law giving him a blowjob, his mind wandered and he said, "You could actually tell just from that, brother in law? You're too damn good."

Nancy looked up and rolled her eyes, expressing her displeasure. Wasn't this basically calling her a prostitute?

But as Luis pressed her head down, she obediently resumed sucking his cock, her mind curiously wondering what her husband and her brother in law would talk about next.

Daniel laughed and cursed him lightly, saying, "Your wife is still heavily pregnant, and you're actually out there enjoying yourself. Aren't you afraid I'll tell your wife?"

"We're all men here, we understand each other. I'm sure you wouldn't stab me in the back, brother in law."

Luis chuckled with a lewd grin, adding, "Besides, I just couldn't help myself. Mainly because the technician right now is truly exceptional."

After saying that, Luis slowly stood up. Nancy panted heavily, knowing what her brother in law intended to do. Her mind clouded with heat, she knelt up straight, her full breasts pressing against her brother in law's thighs. Feeling rather excited herself, she hugged his thighs, actively taking his cock in and out of her mouth rapidly, deliberately letting out soft, subtle moans.

"How good can she possibly be!"

Daniel said with a hint of disdain, "It's not that I look down on you, brother in law, but you're an honest guy who hasn't seen much of the world. You get tempted once and you fall for it. I'll have to take you out sometime to broaden your horizons."

"Brother in law..."

Luis was panting with pleasure, licking his lips excitedly as he said, "I wasn't even interested at first, but this technician looks so much like our Mother In Law, just a bit younger and even prettier."

Hearing her brother in law speak so frivolously about their Mother In Law, Nancy felt increasingly ashamed yet also more excited, her sucking speed quickening noticeably.

"You little bastard!"

Daniel laughed and scolded him, "Come on, our Mother In Law's chest... how many women have ones that big? At most, she just looks somewhat similar."

"True, this one is younger."

"Looks like Mom, but not as big as Mom. But her breasts are still very beautiful and they feel fantastic."

Luis commented critically as he bent down, his hand slipping directly into his sister in law's collar. He'd been looking down at her cleavage from above and couldn't resist any longer. His devilish claws went straight into her bra. With a slight squeeze, he could feel her nipples were rock hard. He rubbed them firmly, making the sister in law, who was still sucking his cock, let out a muffled, indistinct moan.

Stimulated by these vulgar words, her entire face was flushed crimson, her eyes growing increasingly dazed, and she sucked even faster.

"Alright, stop bragging. If you really had the guts to do that, would you even tell me?"

Their relationship had somewhat improved now. Daniel didn't put on an act anymore; instead, they got along quite harmoniously. "Alright, how long until you can get here?"

"About an hour!"

Luis deliberately gave a longer estimate.

"Okay, my dad and I live directly across from each other. No need for me to send you the location again, right?"

"No, no, I remember the way."

Luis smiled wickedly, thinking to himself that he'd just been playing with your wife's beautiful body this very morning.

And now, the stunningly beautiful, fairy like sister in law was under him, sucking his cock. Looking down at this scene, Luis felt a wave of ecstasy, a fierce pleasure spreading throughout his entire body.

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