Jason shifted uncomfortably in his chair, acutely aware of the growing pressure in his groin. The sensation had been intensifying since breakfast began, and now it was becoming impossible to ignore.
"Are you feeling alright?" Elaine asked, noticing his discomfort.
"I'm not sure," Jason replied, while silently communicating with Nia. "What's going on with me? This desire is becoming intolerable."
"The heightened arousal you're experiencing is a documented side effect of the nanovirus integration," Nia's text appeared in his vision. "Your testosterone production has increased by approximately 217% above your baseline. This will require immediate physical release to prevent discomfort."
Jason clenched his jaw. "How immediate are we talking?"
"Within the next 30-45 minutes, preferably sooner. Your body is still adapting to hormonal changes."
Jason shifted again, trying to hide his growing erection under the table.
"I'd like to run those tests now," Richard said, standing up. "We should monitor how the nanovirus is affecting your systems."
Jason cleared his throat. "Actually, Nia is recommending I address a... specific side effect first. She says it's medically necessary."
Richard frowned. "Which side effects?"
Jason felt heat rising to his face. "Hormonal. Libido-related."
Understanding dawned in Richard's eyes. "Ah. Yes, that's to be expected. How severe?"
"Severe enough that Nia is classifying it as medically necessary to address. Soon."
Richard nodded reluctantly. "Very well. The tests can wait an hour."
"Maybe longer," Jason muttered, noticed the women exchanging knowing glances. Elaine's lips curved into a small smile, while Marissa bit her lower lip. Lily's cheeks flushed pink.
"We should probably move somewhere more private," Jason suggested, standing carefully to minimize the obvious bulge in his pants.
"We should go to my room," Elaine suggested quietly. "It has the largest bed."
As they stood to leave, Jason caught Richard's clinical gaze. "Take notes on duration and intensity," his father instructed. "It's valuable data."
Jason nodded tightly and followed the women out.
The moment they entered Elaine's bedroom, Jason's restraint crumbled. His face was flushed, breathing labored, and his movements became urgent and desperate.
"I'm sorry but I can't wait any longer," he gasped, already pulling his shirt over his head. "This is... fuck, it's intense."
"Don't apologize," Elaine murmured, her eyes darkening as she watched him undress. "We're here to help."
"All three of us," Lily added, already slipping out of her top.
Marissa approached him, placing her palm against his chest. "Jesus, your heart's racing."
"Condoms are recommended until the adjustment period concludes," Nia's text flashed across Jason's vision. "Fertility may be temporarily enhanced as well."
"Got it," Jason muttered, fumbling with his belt buckle.
"Got what?" Marissa asked, confused.
"Nia says we need condoms," he explained, kicking off his pants. "Something about sperm changes."
The women exchanged amused glances as they undressed.
"Always so practical, our Nia," Lily laughed, reaching for the drawer where they kept protection.
Jason's hands were shaking as as he put on the condom, his erection straining painfully. The women exchanged amused glances as they began removing their own clothes, but their expressions shifted to surprise when they saw the intensity in his eyes. Jason's enhanced vision caught every detail; the flush spreading across Elaine's chest, the hardening of Marissa's nipples, the slight dampness already visible on Lily's inner thighs. His need surged, almost painful in its intensity.
"Jesus, Jason," Lily whispered, her breath catching as he stalked towards them, his eyes burning with fierce desire. "You look like you're going to eat us alive."
A low, possessive growl rumbled in Jason's throat as he pulled Marissa close, his mouth claiming hers in a fierce kiss. He tasted her, teased her, his tongue dueling with hers as he devoured her soft moans.
"I might," he said, his voice a deep, gravelly promise.
With a swift, powerful move, he spun Marissa around and bent her over the edge of the bed. Her breath caught in her throat as she felt the head of his cock teasing her entrance. He pushed inside her in one smooth, relentless thrust, filling her completely.
"Fuck!" Marissa cried out, her fingers digging into the sheets as he stretched her, claiming her body as his own. His hand fisted in her hair, tilting her head back, baring her neck as he began to move with fierce, urgent strokes.
"That's it, take me," she urged, her hips pushing back to meet his. "So deep, Jason. Feels so good."
He gripped her hips, his hands leaving sharp imprints on her soft skin as he drove into her with a force that made the bed creak. His palm landed sharply on her ass, the smack of flesh on flesh echoing in the room.
"Again!" Marissa demanded, her voice hoarse with need.
He obliged, spanking her again, the sound blending with her cries of pleasure.
"Your partner's heart rate has increased by 42%," Nia's voice cut through the haze of passion, her clinical tone standing out in sharp contrast to the moment. "Vaginal lubrication indicates optimal arousal. Current friction coefficient is ideal."
Jason paused, his eyes narrowing as he processed the detached analysis.
"Don't stop, please," Marissa begged, her voice a mixture of need and desperation. "I need you, Jason. Don't hold back."
He blinked, refocusing on the woman in front of him, on the way her body moved with his. With a sharp crack, he spanked her again, the sound mingling with Lily's sharp intake of breath.
"Again," Lily urged, her eyes glazed with desire. "Harder, Jason. I want to feel it too."
Elaine and Lily watched from the corner of the bed, their own passion building as they witnessed the raw, primal display. Elaine's breath quickened as her hands roamed over Lily's body, her fingers teasing her daughter's nipples as they tightened into hard peaks.
"I've never seen him like this," Lily whispered, her eyes never leaving Jason's face. "It's like he's possessed."
Jason's gaze flicked to Lily, a silent promise in his eyes before he turned back to Marissa. His pace was relentless, his body glistening with a thin sheen of sweat as he drove into her over and over. With a final, powerful thrust, he sent her over the edge, her body shaking with the force of her release.
Without pausing, he turned to Lily, his eyes dark with unspoken promises.
"Come here," he commanded, his cock still rock hard despite his recent release.
Lily approached eagerly, her eyes sparkling with anticipation and a hint of nervousness. He pulled her close, kissing her deeply before positioning her on all fours beside Marissa. Their bodies formed a triangle of intertwined desires.
"I want to watch your face," he said, his voice husky as he tangled his hand in her hair, holding her firmly in place. He pulled her head back, exposing her slender neck, and thrust into her. Her soft moan filled the room, mingling with the wet sounds of their bodies joining.
Elaine moved behind him, her hands caressing his back, sending shivers down his spine. "Don't forget about me," she whispered, her breath hot against his ear.
"Never," he promised, his voice thick with desire. He wanted to give them both everything they craved and more. Without releasing Lily, he turned his head, pressing a soft kiss to his mother's waiting lips.
"Subject's stamina appears enhanced by approximately 240%," Nia noted, her voice a calm contrast to the passionate scene. "Refractory period between orgasms significantly reduced. Heart rate and respiration indicate heightened arousal and endurance."
"What's Nia saying?" Elaine asked, her eyes flicking between Jason and the corner of the room where the AI's presence seemed to linger.
"She's analyzing everything," Jason said with a breathless laugh. "Heart rates, lubrication, friction... it's like having a sex scientist in my head."
"That's weirdly hot," Marissa admitted, her eyes closing as she imagined the clinical gaze of the AI studying their every move. She bit her lip as Jason fucked Lily with renewed vigor.
"God, you feel so good," Jason panted, his hips moving relentlessly. "I can't—I don't want to slow down."
"Don't," Lily urged, her voice breaking with each powerful thrust. "Harder, Jason. Please, harder."
Jason complied, his desire fueled by their pleas. He gripped her hips, his fingers digging into her soft flesh, and pounded into her with force. The sound of skin slapping against skin filled the room, along with their increasingly desperate moans. Sweat beaded on his forehead, and his breath quickened as he felt his climax approaching much faster than expected.
"I'm going to come," he warned, his rhythm faltering momentarily.
"Yes," Lily moaned, wrapping her legs tightly around him. "Cum for me, Jason. Fill me."
Jason's body tensed as he cried out hoarsely, emptying himself into the condom. But instead of the usual post-orgasmic calm, he felt a surge of renewed desire. His need for them, for this connection, was relentless.
"Ejaculation complete," Nia's text appeared. "Temporary reduction in testosterone levels detected. Estimated duration: 7.4 minutes before return to previous arousal state."
"Fuck," Jason muttered, pulling out of Lily and turning to his mother. His need was a tangible thing, a fire in his veins that only seemed to grow with each release. "It's not enough. I need more."
Elaine's eyes darkened with desire as she pressed herself against him. "Let me help you," she whispered, her breath hot against his ear.
"Fuck, Mom," he grunted, lifting her against the wall with ease. Her legs locked around his waist as he entered her, their bodies fitting together perfectly. "I need this. I need you."
Elaine's nails dug into his shoulders, her head falling back as a wave of sensation hit her. "Oh god, Jason!" she moaned, her breath catching in her throat. "You feel... incredible. So strong."
Jason's hips moved with a relentless rhythm, his breath coming in sharp pants. "God, you feel so good," he said, his eyes burning with intensity. "I could stay inside you forever." He paused, a wicked smile playing on his lips as he whispered, "That's a good girl. Whose pussy is this?"
Elaine's eyes flew open at his question, her voice breaking as she replied, "It's yours, Jason. All yours. My cunt belongs to you! To my son! Don't stop, please!"
Hearing his mother's words sent a jolt of pleasure through Jason, heightening his arousal. "You're mine," he growled, his voice hoarse with need. "All of you." He gripped her hips, his thrusts becoming harder, more urgent.
Elaine cried out, her body shaking as she climaxed. But Jason didn't stop, carrying her to the bed and laying her down gently, still joined as one. He continued his relentless rhythm, his enhanced strength allowing him to effortlessly maintain their passionate dance.
After bringing Elaine to climax multiple times, Jason finally allowed himself release, groaning deeply as he emptied himself into the condom.
"Hydration required," Nia's text flashed urgently. "Fluid loss exceeding recommended parameters. Immediate water intake recommended."
Jason reluctantly withdrew from Elaine, breathing heavily. "Nia says I need water."
"What?" Lily asked, sprawled across the bed.
"I need to hydrate," he explained, reaching for the water bottle on the nightstand.
"Already?" Marissa laughed breathlessly. "We just started."
Jason drained the bottle in several long gulps. "According to Nia, I'm losing too much fluid."
Elaine propped herself up on her elbows, hair disheveled and skin flushed. "That was... impressive. I've never seen you like that before."
"And you're still hard," Lily noted, eyeing his erection with a mixture of awe and concern.
Jason looked down, realizing she was right. Despite his recent release, he remained fully aroused.
"Is this going to be a permanent thing?" Marissa asked, reaching for her own water.
"I don't know," Jason admitted, feeling the need building again. "But I'm nowhere near finished."
The women exchanged glances, a mixture of anticipation and slight apprehension in their eyes.
"Round two?" Lily suggested with a grin.
Jason moved back to the bed, his body demanding more. "Definitely round two."
This time, he took Lily first, and she eagerly wrapped her legs around his waist as he positioned himself. With a swift, powerful thrust, he entered her, a deep groan escaping his lips as he savored the tight heat of her body. The angle allowed him to penetrate deeply, and he relished the sharp cries that escaped her with each powerful movement.
"Oh god, Jason," Lily moaned, her breath coming in short gasps. "You feel so much bigger... it's like you're even thicker than before."
"The nanovirus has enhanced penile tissue density and erectile function," Nia commented, her voice calm and analytical. "Fascinating adaptation to increase reproductive efficiency."
"Shut up, Nia," Jason thought irritably, not wanting the AI's clinical observations interrupting this moment. He focused instead on the sensation of his sister's soft body beneath him and the way she tightened around him with each thrust. He reached up, grabbing Lily's breasts and pulling her nipples gently as he drove himself deeper.
"You like that, sis?" he growled, his voice rough with desire.
"Harder," she begged, her fingers digging into his arms. "Please, Jason, fuck me harder!"
He complied, his movements becoming more urgent as he lost himself in the pleasure. The headboard slammed rhythmically against the wall, the sound of their passion echoing through the room.
Marissa straddled Lily's face, grinding her pelvis down as she captured her sister's mouth with her own other lips. "Mmm, that's it," she murmured, her eyes holding Jason's as Lily's tongue began to work its magic. The sight of his two sisters in such an intimate act sent a jolt of pure lust through him. With a rough growl, he spanked Lily's bare ass, leaving a bright red handprint on her pale skin.
"Fuck, that's hot," he groaned, his hips moving faster now, his cock sliding in and out of Lily with urgent thrusts. "You two look so fucking good together. Keep going, baby sis, show her how good you are with that tongue."
Marissa let out a low moan as Lily's tongue circled her clit, her eyes fluttering closed for a moment before snapping open again to lock with Jason's. "Mmm, you like that, Jay? Want to watch me cum all over Lily's pretty face?" she teased, her breath coming in short gasps as Lily's skilled tongue worked its magic.
Elaine, her eyes dark with desire, recovered enough to join in the pleasure. She slid next to Lily, taking one of her nipples into her mouth and sucking gently, her hand cupping the other breast. The room was filled with the wet sounds of sex, the slick slide of skin against skin, and the moans and gasps of three women.
"That's it, baby, suck her good," Jason encouraged, his voice hoarse with need. "You're doing so well, Lily. Make Marissa cum for us." His words spurred his youngest sister on, and she responded with renewed enthusiasm, her tongue flicking and circling Marissa's clit.
As Lily's body tensed and she came again, crying out softly, Jason didn't slow down. He wanted to push them all to the edge, to watch them fall apart with pleasure. His hands gripped Lily's hips, pulling her down onto his cock as he thrust up, seeking the deepest possible connection.
"Your partners are showing signs of heightened pleasure response," Nia's text scrolled across Jason's vision. "Vocalizations suggest they are approaching orgasm."
Jason huffed out a breath, his focus entirely on the women before him. "Not now, Nia."
"What?" Marissa questioned, her eyes sparkling with curiosity and pleasure. "Something wrong?"
"No, it's nothing." He turned back to her, a smile playing at the corners of his mouth. "Just Nia, giving me... performance reviews."
The women burst into laughter, their bodies shaking with mirth. But their laughter quickly turned to moans as Jason resumed his attentions, his hands and dick moving expertly between them.
"What's she saying?" Elaine asked, her voice hitching as Jason's fingers teased her sensitive skin. "Is she... rating us?"
"She's analyzing your... responses," Jason admitted, a hint of amusement in his voice. "Your pleasure thresholds, heart rates... all of it."
"Well, tell her..." Marissa trailed off as Lily's tongue teased her clit, "...we give you... five stars."
"Definitely five stars!" Lily chimed in, her voice muffled as she continued to pleasure Marissa.
Jason felt his second orgasm building, a coil of pleasure tightening in his gut. "I'm close again," he warned, his voice rough with desire.
"Come on me," Lily begged, her words sending a jolt of desire through him.
He pulled out, his movements urgent as he tore off the condom. His release spattered across Lily's stomach, a hot, sticky contrast to her cool skin. Her hands came up to touch the wet strands, spreading them across her body as she moaned softly.
"Fluid loss increasing," Nia observed. "Recommend hydration within the next 30 minutes to maintain optimal performance."
"While I fuck my mom, I want to lick you, too." Jason's voice was rough with desire as he turned to Marissa, his erection already throbbing with anticipation.
Marissa's eyes widened at the explicit invitation, her breath quickening. "Already? Damn, you're impressive."
Jason let out a soft chuckle, his fingers already maneuvering her into place above his face. "It's the nanovirus. I can't control it." And it was true; the virus had heightened his senses, his body responding with a feverish urgency.
Groaning, he found himself surrounded by soft, warm flesh. His tongue worked eagerly against Marissa's sweet pussy while Elaine rode him with increasing fervor. The slick heat of their bodies and the wet sounds of their pleasure filled the room.
"Oh fuck, Jason!" Elaine gasped, her hips grinding down on him with wild abandon. "This is—I can't even describe it."
"I know," Marissa agreed, her hips rocking against Jason's mouth. "It's like he's been supercharged or something."
After Elaine found her release, Jason decided to focus solely on Marissa. He entered her standing, lifting one of her legs over his shoulder to penetrate even deeper.
"Oh fuck, Jason! Yes, that's so deep!" Marissa cried out, her back arching off the mattress, her hands gripping his shoulders.
"You feel amazing," he groaned, his hips snapping forward in a relentless, punishing rhythm. "So fucking tight around me."
Elaine and Lily, their bodies still humming with pleasure, moved to Marissa's sides. They took one of her breasts in their mouths each, their tongues teasing and sucking, while Jason continued to thrust into her with fierce intensity.
The triple sensation overwhelmed Marissa, her body betraying her as she convulsed around Jason's length. "I can't—oh God, it's too much!" she gasped, even as another climax built rapidly, threatening to push her over the edge once more.
"That's it," Jason encouraged, his voice hoarse. "Come for me, Marissa. Let go."
Marissa's breath hitched, her body trembling on the edge of ecstasy. She was helpless to do anything but surrender to the waves of pleasure washing over her.
Hours passed in a blur of positions and combinations. Jason lost count of how many times each woman climaxed, or how many times he did. Nia periodically reminded him to hydrate, which became a running joke among them.
"Water break!" Lily would announce, mimicking Nia's clinical tone whenever Jason paused to drink.
Eventually, after what must have been their fourth or fifth session, the women began showing clear signs of exhaustion.
"I need a breather," Elaine admitted, her body collapsing against the pillows in a boneless heap. "I don't think I can feel my legs anymore."
Lily winced as she shifted, her voice a mix of wonder and exhaustion. "Is this going to be our new normal? Because wow, I didn't know it was humanly possible to feel this deliciously wrecked."
Marissa, her skin glistening with a sheen of sweat, rolled onto her back with a satisfied sigh. "I never thought I'd say this, but I'm officially tapping out. You, my dear brother, have fucked me senseless."
Nia's voice cut in, her tone as clinical as ever. "Your sexual performance exceeded human norms by approximately %272. The women's physical exhaustion suggests they have reached their biological limits."
Jason couldn't suppress a chuckle, his breath still slightly uneven. "No shit, Nia. I think the ladies get the point."
Elaine turned her head, her eyes sparkling with amusement. "What did she say? Something about norms and limits?"
"Something like that," Jason replied with a lopsided grin. "Basically, I wore you all out."
He looked at each of them, his gaze softening. "I'm sorry," he said, his voice a mix of apology and pride. "I know I got a little carried away, but I'm still... you know, figuring this all out."
Marissa reached out, her hand gently squeezing his. "Don't apologize. That was incredible, but we're only human. Or at least, I am. You seem to have the stamina of a small army."
Lily joined in, a mischievous glint in her eye. "Maybe you need to expand your harem, brother dear. More women to satisfy your insatiable appetite."
"Very funny," Jason shot back, though a part of him marveled at his body's continued arousal despite their exhaustive session. "Who knew being a sex god was so damn tiring?"
The women laughed, their voices echoing in the dimly lit room.
"Is it getting any better?" Elaine asked, gesturing to his persistent erection.
"A little," he admitted. "Not as urgent as before."
They all sprawled across the bed, catching their breath. The sheets were damp with sweat and other fluids, tangled and pushed to the edges of the mattress.
"So how long will this continue?" Lily asked after a while. "Daily sex marathons until we can't walk?"
"I'm not complaining," Marissa said, "but I might need to start training for endurance."
Jason frowned. "Nia, how long will these effects last?"
"The extreme libido increase is temporary," Nia's text appeared. "It should stabilize after your body completes the adaptation process. However, your baseline sexual drive will remain approximately 150% higher than your pre-enhancement levels."
Jason relayed this information to the others.
"Why the permanent increase?" Lily asked.
"Constantly manipulating hormone balance would cause physiological stress," Nia explained through Jason. "It is optimal for your body to adapt to elevated testosterone levels now. Additionally, according to Richard's parameters, you will need to father multiple offspring to ensure genetic diversity in future generations."
"Of course," Elaine sighed. "Everything comes back to Richard's grand plan."
"I just didn't expect it to be so... intense," Marissa admitted.
Before Jason could respond, his stomach let out a loud, prolonged growl. The unexpected sound broke the serious moment, sending them all into fits of laughter.
"I guess sex makes you hungry," Lily teased.
"You've burned approximately 2,740 calories during sexual activity," Nia informed him. "Your body requires immediate caloric replenishment."
"Apparently I need to eat," Jason said, joining in their laughter. "The super-sex burns a lot of calories."
"I'll make you something," Elaine offered, attempting to sit up before falling back with a groan. "As soon as I can feel my legs again."
They all dissolved into exhausted laughter, the tension of the past hours finally breaking.
"At least we know one thing," Lily said, resting her head on Jason's chest.
"What's that?" he asked, stroking her hair.
"If the world needs repopulating," she grinned, "you're definitely up for the job."
They helped each other dress, movements slow and tender now. Marissa helped Jason with his shirt buttons while Elaine and Lily leaned against each other for support.
"I could eat everything in the kitchen," he admitted.
"After that performance, you've earned it," Marissa said, wincing slightly as she pulled on her shirt.
"Some side effects are definitely better than others," Jason said, opening the door for them.