Seeing her so thoroughly satisfied, Luis licked his lips contentedly. Suddenly, he scooped her up in a princess carry. Nancy instinctively wrapped her arms around her brother in law's neck.

Using her last shred of awareness, her final moment of clarity, she whispered, "Lily, the mask has solidified. I will go back to my room now."

They could not continue like this.

It felt so good it was almost lethal, and the tension and thrill were driving her mad. She dared not imagine what might happen if they went further.

Given her brother in law's impulsiveness. he might very well complete his sister in law's first act of adultery right beside his own wife. And now, lying utterly weak and limp, she was completely incapable of refusal.

"Okay."

Lily mumbled an indistinct agreement. With the soft piano music playing, she did not detect anything amiss.

Luis, well aware of his sister in law's intention, merely chuckled without a word and carried her out of the room, back to her own bedroom, intending to continue her training.

Although it was incredibly thrilling.

Luis also felt a slight trepidation, a secret war raging within his conscience.

For the first time fucking his sister in law. would it be better to do it in front of Daniel, a classic 'husband watches' scenario, or should he find a way to do it right next to his wife? By now, ordinary illicit sex could no longer satisfy the evil desires lurking in Luis's heart.

"Ding.... Mission not completed."

Luis knew what was going on as soon as he opened the System interface. The task required an orgasm through oral sex. Strictly speaking, the climax achieved from fingering did not meet that standard.

Luis was not frustrated, but he was genuinely surprised that his sister-in-law's body had become so sensitive under his influence. She had reached orgasm in just two or three minutes. What man wouldn't be captivated by such a stunning creature?

Most importantly, with the door now closed, they were completely alone in her room. The beautiful sister-in-law, having returned to her own space, relaxed completely, melting into his arms and savoring the moment.

She was experiencing the bliss of an oral-induced orgasm for the very first time, the intense pleasure of his skilled tongue, and, of course, the expert caresses Luis always provided after climax, touches that never failed to soothe and arouse further.

No woman could possibly resist such tender intimacy. So Nancy kept her eyes tightly shut, lost in the sensation. For her, this dreamlike climax, combined with his gentle aftercare, was an overwhelmingly potent combination, almost too much to bear.

"You filthy rascal."

After resting for a good while, her small hand actively sought out his still rigid cock and began stroking it. Her entire body glistened with a fragrant sheen of sweat, her face flushed with the lingering heat of orgasm. Her slightly disheveled hair only added to her seductive, alluring appearance.

Her eyes were pools of liquid desire, filled with love and intoxicated satisfaction. She swatted at Luis playfully and scolded, "You're so wicked. How could you act so recklessly? You nearly scared me to death."

"Heheh, big sister."

Luis began roaming his hands over her body, his caresses tracing the curves of her perfect form. He let out a comfortable hum. "It was exciting, wasn't it. It would have been even more thrilling if I'd fucked you right in front of Lily."

"Drop dead. Don't even dream about it. I won't give you another chance to mess around like that in the future."

"Big sister, you were the one enjoying yourself so much. I'm afraid next time it'll be you dragging me off to do it."

As soon as Nancy finished speaking, Luis found himself captivated by his sister-in-law's moist, enticing lips. He couldn't resist leaning in and capturing them with his own.

"Don't kiss me."

Nancy tried to evade him, wanting to protest that he had just been licking her down there, and even her backside, but the shameful words ultimately stuck in her throat.

Luis paid no mind. One hand drifted between her legs, and with the slightest teasing touch, the beautiful sister-in-law went limp, her mouth parting helplessly. Her soft, tender tongue surrendered to her brother-in-law's possessive exploration.

As their bodies entwined and their hands continued their mutual caresses, Luis showed no intention of taking things further. Surprisingly, it was Nancy who grew fidgety, a blush coloring her cheeks. She wondered why her brother-in-law had such immense patience. He was rock hard, so why wasn't he pouncing on her?

"Big sister, did it feel good just now?"

Luis lay against her, using both his hands and mouth to savor her full, beautiful breasts.

Nancy let out faint, breathy moans, panting lightly, "It didn't feel good... It was disgusting."

The tsundere act, where her words denied what her body so clearly enjoyed, was utterly adorable at times. Luis was thinking he needed to seize the moment and finish the task quickly. But just then, Nancy's phone suddenly rang, startling them both.

"Hello... Mom, we're home. Lily is putting on a face mask."

Nancy answered the phone, her voice laced with a hint of guilt and anxiety.

After all, if her mother found out that she and her brother-in-law were just one step away from full-blown intercourse, she would probably be beaten to death.

Luis behaved himself and didn't move recklessly. Nancy's face held a mixture of shame and distraction. She was slightly worried this lecherous brother-in-law might choose this exact moment to thrust inside her, because he was absolutely capable of such a beastly act.

Mother-in-law Ruth's voice was light and cheerful. "Mom finished the card game early. I'm in the elevator now, almost home.

Go wipe the table down."

"Okay."

After hanging up, Nancy scrambled off the bed in a fluster to find her panties. She then shot him an accusatory look. "You heard her. Hurry up and find your underwear. Ah, your underwear is in your room."

"Okay."

Though it was a bit of a letdown.

Luis didn't dare continue his mischief. He quickly slipped back to his own room and secretly put on his underwear. "Lily, Mom said she bought some food and wants us to have a late-night snack together."

"It's been about half an hour. I'll ask big sister to help me take this off."

His cock was still hard, but Luis didn't care about the obvious tent in his underwear. If his wife didn't mind, why should he?

As for his mother-in-law and sister-in-law, both were already intimately involved with him. They would naturally play dumb. This undercurrent of illicit relationships within the household had, paradoxically, created a more harmonious and agreeable atmosphere than before.

His mother-in-law didn't scold people at the drop of a hat anymore. His beautiful sister-in-law no longer bullied her younger sister constantly. Really, it was all thanks to Luis.

Ruth had brought back a large portion of spicy lamb spine hotpot. It was a generous serving, already bubbling away on the induction cooker.

The moment Nancy came downstairs, she giggled and said, "Mom, looks like you were on a winning streak today. A large portion with extra meat and a side dish."

She had washed her face, but the telltale flush in her eyes was hard to mask completely.

However, she always did her beauty exercises at home in the evenings, so no one would suspect anything was amiss.

"Mom, I love you so much! Spicy flavor! My stomach was just starting to growl."

Lily came downstairs, hugged her mother affectionately, and gave her a kiss.

Nancy laughed. "Mom, you're so biased. You used to tell me pregnant women should eat lighter, blander food."

"Tell me that again after you get pregnant yourself!"

Ruth deftly arranged the cups, bowls, and chopsticks, chiding, "Lily, you're pregnant now. You can't just ignore hunger. If you want to eat something, just say it. If your husband isn't around, your big sister can run errands for you. Really, you need to be more careful."

"I know."

Lily playfully stuck out her tongue and gently stroked her belly. She was really starting to enjoy the feeling of being the family's precious darling now.

"Mom, more alcohol? Luis and I already drank white liquor tonight."

"It's fine. Have a little drink with your mom."

Ruth opened a bottle of alcohol she had brought back, rolling her eyes as she said, "You little chatterbox. Look how filial your brother-in-law is being. Why are you being such a killjoy?"

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