Lust System: Harem Of Beautiful Women

Chapter 787 MIL Ultimate Mission

The mission timer was one hour. Checking the time, about half an hour had passed.

”Ding... ʼPlump and Alluring Beautiful Mother-in-Lawʼ mission: Ultimate mission: ʼPerfect Three-Hole Opening.ʼ”

”Perform oral creampie, vaginal creampie, and anal creampie on mother-in-law Ruth, each once. Complete the mission within 1 hour. Reward: one random blind box.”

Luis quickly stepped forward and pressed himself against her, saying, ”Mom, letʼs shower together!!!”

”Get out... I need to use the bathroom first.”

Fine, his mother-in-law could be fierce when she wanted to be. Right now she looked like a startled bird.

She was probably afraid heʼd take the chance to go for her ass again, and she was clearly feeling quite embarrassed. Luis didnʼt dare provoke her further and scurried out.

Once out of the room, he instinctively lit up a post-coital cigarette. As he waited anxiously, he suddenly realized something was wrong.

Oh shit...

Glancing around, he saw his underwear tossed at the foot of the bed, his slippers right beside it, and his phone and lighter on the nightstand.

Luisʼs scalp went numb. No wonder his sister-in-law had been so chatty earlier—anyone with eyes could have seen all that. Heʼd been careless not even locking the door. What an idiot.

He grabbed his phone and saw a message from Leah.

”Brother-in-law, youʼve gone too far.”

Fuck. Anyone who saw those things would know exactly what was going on. Unless she was an idiot, Luis couldnʼt think of any excuse that would explain it away.

Shit... might as well just own up to it. Heʼd deal with tomorrow when it came.

Luis locked the door, took a deep drag of his cigarette, and forced himself to think clearly.

His sister-in-law knew about his affair with her mother. But she hadnʼt called him out or confronted him—sheʼd just pretended to be clueless, testing the waters.

Her young mind was probably in chaos right now, completely lost and unsure of what to do.

Given the situation, she most likely wouldnʼt dare to expose anything. All he had to do was smooth things over with her tomorrow.

”You little bastard, you went so hard just now—are you trying to kill me?”

Ruth came out after showering for quite a while. Luis checked the time—only 20 minutes left.

Given his mother-in-lawʼs reaction earlier, anal sex was clearly an unpleasant experience for her.

If he didnʼt complete the mission today, convincing her to let him do it again later would be a huge hassle. Better to just power through and get it done now.

Luis stepped forward, wrapped his arms around her, and with a lecherous grin pulled her back onto the bed, his hands immediately kneading her full, heavy breasts.

He cooed gently, ”Mom, if you donʼt like it, I wonʼt do it again!!!”

”Hmph, I definitely wonʼt let you—itʼs not comfortable at all...”

Ruth said with feigned indignation, but as soon as Luis kissed her, her passion flared up again. Her words were just playful scolding.

In truth, if her son-in-law really insisted, sheʼd put up some token resistance but wouldnʼt be that firm—it all depended on how he sweet-talked her.

While kissing her and caressing her body with greedy hands, he pressed down on her head and said, ”Mom, give me a blowjob...”

”Always making me serve you, you lazy little bastard!!!”

Ruth was instantly swept up in the passion. With a coquettish scold, she lowered her head and took his cock into her mouth, sucking eagerly.

Luis had already come twice, but sheʼd only had one orgasm—and not a very intense one at that. Of course she wasnʼt satisfied.

At her age, with desires as fierce as a wolfʼs, once her son-in-law had awakened those cravings, she simply couldnʼt resist the pleasure.

Ruth, having tasted that sweetness, treasured every stolen moment with her son-in-law. Whenever they came together, she lost all composure.

While enjoying her oral skills, Luis let his tongue roam freely over his mother-in-lawʼs beautiful ass, teasing her with both hands as he worked her up.

Glancing at the time, only about 18 minutes remained.

Relying on his stamina of 8.8, even after two orgasms, he was quickly hard again in her mouth.

Sucking in her son-in-lawʼs intoxicating scent, Ruthʼs eyes were already brimming with lust.

”Ahhh~”

Luis couldnʼt wait any longer and pushed her down. Under his mother-in-lawʼs hungry gaze, he lifted her legs, bent down to kiss her while thrusting deep inside, drawing a satisfied, wanton moan from her.

With time so tight, sometimes having great stamina was a burden.

Luis kissed her fiercely, groped her breasts, and fucked her with ruthless intensity. Each thrust was deep and powerful, driving all the way to the hilt.

His pace was so fast it left afterimages, and he could even feel the friction heating up at their point of union.

”Ohhh, son-in-law... itʼs so good...”

”So amazing... are you trying to fuck me to death...”

”I canʼt take it... ahhh, it feels so good~”

Luis went full throttle, fucking her wildly. Such ferocious sex made Ruth instantly surrender to ecstasy. At her age, with desires burning like fire, she simply couldnʼt withstand this beast-like union.

The two bodies on the bed were entangled without restraint, and this time Luis was completely consumed by primal lust.

Even when his mother-in-law reached orgasm, he didnʼt stop to caress her as usual. Instead, he maintained a high tempo and kept fucking her relentlessly.

The sheets beneath their joining were soaked with her love juices, a testament to just how intensely satisfying the experience was for her.

”Ahhh~”

As Ruth reached her third orgasm, Luisʼs eyes were bloodshot as he mustered all his strength and thrust deep inside.

With a low growl, his hot semen shot out powerfully, flooding the sacred place that had given birth to his wife and her two sisters—the ultrasensitive womb that was already in the throes of climax.

That scorching heat sent Ruth over the edge, her body trembling as she moaned in ecstasy, nearly fainting from the sheer pleasure.

”Ding... Ding... ʼPlump and Alluring Beautiful Mother-in-Lawʼ mission: Ultimate mission: ʼPerfect Three-Hole Opening.ʼ”

”Ding... Mission complete. Reward blind box has been issued.”

”Ding... Ultimate mission complete. Hidden welfare reward: ʼBeloved Big Tits.ʼ”

”Ding... Welfare content: Further physical modification of the Whitmore sisters—Eloise and Ruth—increasing sensitivity and regulating endocrine function through sensitivity adjustment.”

”Ding... Welfare effect: Makes the mature sisters utterly obsessed with the host, addicted to his scent and the taste of his semen, easily achieving orgasmic satisfaction.”

”Ding... Increased anal sensitivity...”

Hearing the continuous chime of system notifications, Luis looked up and let out a long sigh of relief.

Heʼd been less than a minute and a half away from failure. Damn, that was close.

This was the first time heʼd had to complete a mission so rushed. For his current stamina, cumming three times in an hour was genuinely challenging—mainly because he had to focus and shoot quickly.

Though it had felt amazing, the mental strain was exhausting.

And Luis immediately understood what the main missionʼs hidden welfare reward was all about.

Heʼd cum three times in an hour, and with all the recent indulgence, his stamina had dropped to 8.5. The System was worried he might one day end up dead on a womanʼs belly from overexertion.

”Mom... how are you feeling~?”

Luis held his mother-in-law close and asked gently.

But her hair was disheveled, her face flushed crimson with the satisfaction of orgasm, and she was drenched in sweat, still twitching unconsciously.

Clearly, sheʼd been overwhelmed with pleasure and had passed out. As Luis slowly pulled his cock out, she let out a dazed moan.

He mounted her face and slid his cock into her slightly parted mouth. Ruth instinctively took it in and began to suck.

Once sheʼd recovered enough, Luis sprawled back casually and spread his legs.

Ruth propped herself up and knelt between her son-in-lawʼs thighs, eagerly savoring his cock with relish.

”Third time... and you still came so much~”

Ruth murmured as she licked away the thick, fragrant semen mixed with her own love juices.

After cleaning him up with her mouth, she slapped him lightly and said, ”Alright, Iʼm going to sleep. Iʼm exhausted—Iʼll shower tomorrow.”

”Mom, let me sleep with you!!”

”No need. Go back and sleep with Lily. Iʼm used to sleeping alone.”

Luis had initially wanted to strike while the iron was hot and complete the sister duo side mission in one go.

But his mother-in-law looked completely worn out. Her asshole had just been broken in, sheʼd been thoroughly taken in all three holes, and the final creampie sprint had been brutally intense. She was probably wrecked to the bone.