Multi-generational Plasma EXCHANGE 5
Read Part 1, Part 2, and Part 3 by @cobraas-blog and Part 4 by me.
Leaving Evan’s penthouse that night, the injections tucked into my backpack felt like a ticking time bomb. I told myself I wouldn’t use them. It wasn’t right to take Dar’s body permanently. He’d given me so much in the past few months, enduring the physical toll of his own life while I reveled in the vigor of his youth.
But over the next week, the temptation gnawed at me. The doses whispered from my backpack, Evan’s words echoing in my mind. “Think about what you want, Dar.” I tried to push it away, but my infatuation with this body was just so powerful. Eventually I gave in.
The first dose happened because of my first visit to the gym in this body. The atmosphere was electric, and I could feel eyes on me as I worked out. The subtle glances and lingering stares fed my growing desire. Every appreciative look, every casual nod of admiration sent a thrill through me.
“Nice form,” someone murmured as I passed, their voice tinged with envy.
Another gym-goer, catching my eye in the mirror, bit his lip before flexing back at me. Fuck, you could tell he wanted me.
I was drawing attention, and it felt intoxicating. By the time I reached the locker room, I was on fire.
Staring at my reflection in the mirror, I flexed, watching the muscles ripple under my skin. I felt an overwhelming surge of lust and desire. My fingers traced the contours of my abs, and I could see the raw, primal attraction in my own eyes. It was a moment of pure vanity, a glimpse into a future I could have if I chose to stay.
Before I knew it, I was reaching into my bag. The auto-injector felt cool and smooth in my hand, a stark contrast to the heat coursing through my body.
I pressed the injector to my thigh and felt the quick, sharp jab as it delivered the dose. The effect was immediate, a rush of adrenaline and arousal that made my breath catch. The thought of being one step closer to keeping this body forever made me even hornier.
I stumbled into the showers, my hands shaking with desire. The water was cold at first, shocking my system, but I barely noticed. My mind was a whirlwind of sensations and thoughts, each one pulling me further into the abyss of temptation.
I started jerking off, the water cascaded over my body, amplifying every touch and movement. My mind raced with images of what life could be like if I stayed this way … maybe I’d let those guys out there do more than just stare.
As I came, a wave of guilt crashed over me.I leaned against the shower wall, panting, the reality of what I’d just done sinking in. I promised myself I wouldn’t do it again. I had to be stronger, for Dar’s sake.
But a few days later, it happened again. I went to the beach, eager to enjoy what was clearly going to be one of my last days with this body. The moment I stepped onto the sand, it was clear I was the center of attention. Guys were eyeing me, their gazes lingering appreciatively over my physique.
As I laid out my towel and soaked up the sun, I noticed how many of the guys were blatantly checking me out. It wasn’t just looks—they were practically undressing me with their eyes.
“Fuck” i thought to myself “how could I ever give this up.” I pulled out the auto-injector from my bag and took another dose. The rush was invigorating. I spent the rest of the day basking in the sun, a smug smile on my face as I thought about how close I was to making this body mine forever.
On the drive home, I couldn’t resist feeling up my muscles, savoring the firm contours under my fingertips. “Just one more dose” I kept thinking to myself.
When I got back, I ended up jerking off in the shower, overwhelmed by the pleasure and the excitement of the body I was about to make permanent. It felt incredible, but afterward, I was horrified.
I promised myself I wouldn’t take the last dose, and I texted Evan just to make sure
“Hey Evan, no matter what I say, do not give me the final dose.”
Evan’s reply came quickly. “What’s the matter? Did you take the other doses?”
I hesitated before responding. “Yeah … I just couldn’t help myself.”
“You know, it’s just one more prick,” he replied. “Dar would be none the wiser, and you’d get to keep that amazing body. Think about it—do you really want to go back?”
I felt a pang of uncertainty but responded firmly. “I’ve made up my mind. I can’t do that to him.”
Evan’s final text carried a mix of understanding and flirtation. “Alright, Dar. If that’s your choice, I’ll respect it. Even though its a shame that body has to go back to your straight grandson.”
As I sat in Dar’s room, preparing for the swap back tomorrow, a mix of anticipation and dread settled over me. Dar had been struggling mentally these past few weeks, but my old body was thriving. Dr. Jacob’s latest results showed my heart function had dramatically improved, now comparable to someone ten years younger.
Dar had gone to bed early, brimming with excitement about swapping back. He had talked about all the things he planned to do—hanging out with friends, getting back into his gym routine, and eating a massive cheeseburger, which he couldn’t do on the restrictive diet Dr. Jacobs had him on.
I glanced over at the Grindr app on my phone, my search for a hookup had yielded lackluster results. I knew I wanted to get railed at least once before I swapped back. But despite the incredible physique I was rocking in Dar’s body, the potential partners seemed far from thrilling.
Naturally, my mind wandered back to the satisfying encounter I’d had with Evan. And I could trust him not to make things weird with Dar when we swapped back – he knew what was going on after all.
With a sigh, I opened the messaging app, my thumb hovering over Evan Fox’s contact. My fingers moved almost on their own as I typed, “Hey Evan, swap back is tomorrow. I still don’t want the final dose, but I’m curious about what it feels like to be with a real man in this body. Interested?”
Sending the message gave me a rush, a flutter of excitement that settled into a partial boner as I awaited his reply. The response came quickly, his words tinged with playful flirtation: “Sure, see you soon ;)”
I opened the door, and there he was—Dar, or rather, Gramps in Dar’s body. He looked absolutely stunning, his tight shirt hugging every contour of his fit, muscular frame. My eyes couldn’t help but linger, tracing the definition in his arms, the way his chest filled out the fabric. Fuck, he’s so hot.
“Hey, Dar,” I said warmly, but my gaze was doing more than just a polite greeting—I was practically undressing him with my eyes.
Dar returned my look with a small, appreciative smile, a mix of confidence and something almost shy. It made him even hotter, that blend of strength and vulnerability. “Thanks, Evan,” he replied, his voice carrying a hint of nervousness that only added to his appeal.
I gestured for him to follow me into the living area. As we walked, I couldn’t resist bringing up the topic that had been on both our minds. “So, I’ve got to mention,” I began, keeping my tone casual, “I still have the final dose if you’re reconsidering. Just a quick injection, and it’ll be set before the swap tomorrow morning.”
Dar shook his head, though his hesitation was clear. “I can’t do that to him, Evan. I’ve already taken things too far.”
I nodded, respecting his decision for now, but the thought of how close he was to keeping this body forever lingered in the air. “I get it,” I said, offering him a smile as I moved to the kitchen. “How about a drink? We can watch a movie in bed, cuddle a bit.”
Dar agreed, and I handed him the drink. As we laid down into my bed, I couldn’t resist complimenting him, letting my hands roam as I did. “You know, this body is incredible,” I said, my fingers lightly grazing over his bicep. “These arms…” I trailed off, squeezing the muscle, feeling the power beneath his skin.
He chuckled softly, his tension easing a bit. “Thanks.”
I stepped closer, my hand moving to his chest, fingers brushing against the hard lines of his pecs. “And this chest,” I murmured, “perfectly sculpted.” My eyes met his, the air between us thickening with unspoken desire.
Dar’s breath hitched slightly, and I could see the conflict in his eyes, the pull between what he knew was right and the temptation of the moment. As my hand trailed lower, resting on his abs, I whispered, “Imagine waking up in this body every day—forever.”
My hand slid around the elastic band of his briefs, fingers teasingly dipping below before I gently but firmly tugged on his balls. The gasp that escaped his lips sent a thrill through me.
I felt his cock harden in my hand, the heat and firmness of it fueling my desire. My fingers wrapped around it, stroking slowly, savoring the way his body responded.
Without breaking contact, I moved my other hand lower, my finger pressing against his tight hole. I began to loosen him up, all while my lips found their way to his abs, kissing and worshipping every inch of them. “Take off your shirt,” I murmured, and he complied, his movements a mix of urgency and anticipation.
With his chest now bare, I continued to worship his abs, trailing kisses down the defined ridges, my hands exploring every part of his body. My fingers worked his hole, feeling it give way as I gently prepared him.
The next step was inevitable. I pulled off his pants and briefs in one smooth motion, fully exposing him to me. His cock stood proudly, begging for attention, and I wasted no time. I lowered myself, taking his length into my mouth while simultaneously pushing my fingers deeper into his ass. The dual sensations made him shudder, his body trembling with pleasure.
I could tell he was ready, and so was I. After loosening him up enough, I stood, stripping down in front of him. My own uncut cock was already dripping with an insane amount of precum, making it slick and ready. The need for lube was nonexistent—I was more than prepared.
Positioning myself, I guided my cock to his hole, the tip pressing against him. I could see the anticipation in his eyes, the way his body tensed and then relaxed, opening up to me. With one smooth, unhurried motion, I slid right into him, the tight warmth surrounding me as I filled him completely.
The sensation was incredible, a perfect blend of heat and pressure, and I began to move, slowly at first, savoring every inch as I thrust deeper into him. His body responded perfectly, and I could see the mix of pleasure and desire written all over his face. This was what he wanted, what he needed, and I was more than happy to give it to him.
For the next twenty minutes, I took my time with him, fucking him in every conceivable position, making sure we both experienced the full extent of pleasure his body could offer. I started slow, savoring each thrust, each moan, each gasp that escaped his lips. We transitioned from him on his back, legs draped over my shoulders, to him riding me with reckless abandon, his eyes locked onto mine, full of lust and desire.
As we built toward our climax, I guided him back into a classic missionary position. I leaned down, our foreheads touching, feeling the heat radiating between us. I could sense he was close, his breath coming in ragged bursts. I slowed my pace, stroking his cock with a firm, deliberate grip while I pumped into him in a deep, unhurried rhythm.
“Come for me, Dar,” I whispered, my voice thick with need. “I want to feel you explode.”
His response was immediate. With a strangled cry, his body tensed, and I felt him pulse in my hand as he came hard, his cum splashing between us. The sight of him lost in pleasure, combined with the tightness of his body clenching around me, nearly sent me over the edge, but I held back, wanting to prolong the moment.
Once he finished, I didn’t give him time to recover. I flipped him onto his side, spooning him, my chest pressed against his back. I slid back inside him, the new angle eliciting a low moan from both of us. I wrapped my arm around his torso, holding him tight as I began to thrust again, the deep, rhythmic movements driving us both wild.
“This feels so fucking good,” he murmured, his voice heavy with exhaustion and satisfaction.
“Yeah?” I grunted, my breath hot against his ear. “You love being fucked like this, don’t you?”
He nodded, his head rolling back against my shoulder, lost in the sensations. “Don’t stop,” he whispered, his voice barely audible.
I didn’t stop. I kept fucking him, each thrust pushing me closer and closer to the edge. The combination of his warmth, his tightness, and the sheer pleasure of knowing he was mine to keep was too much to resist. With one final, powerful thrust, I came hard, filling him completely, the orgasm wracking my body with intense pleasure.
Afterward, we lay there in silence, our bodies still intertwined, our breathing slowly returning to normal. I could feel the weight of what I’d just done settling over me, but instead of guilt, all I felt was a deep sense of satisfaction.
“Stay the night,” I said softly, my lips brushing against the back of his neck.
He shifted slightly, his hand reaching back to hold mine. “I will,” he replied, his voice heavy with sleep. “As long as you keep your dick inside me.”
I chuckled, pulling him closer. “I can manage that.”
He drifted off to sleep shortly after, his breathing steady and even. But as I lay there, my mind was far from restful. I thought about my own body, how perfect it was now, and how glad I was that I’d found a way to make the swap permanent. Dar had done so much for me, endured so much—I owed it to him to give him the same opportunity.
Once I was certain he was deeply asleep, I carefully reached into the bedside table, my fingers finding the cool metal of the remaining auto-injector. My heart pounded with excitement and a touch of apprehension. I knew this was the right decision.
With one quick motion, I jabbed the injector into Dar’s leg. He stirred slightly, mumbling something incoherent, but didn’t wake up. The small act sent a surge of arousal through me. Knowing that he’d now be in that body forever, just like I was in mine, made me feel powerful—excited for the future we’d share.
My cock, already semi-hard from the thrill of what I’d just done, quickly rose to full attention. I didn’t hesitate. I slid back into Dar’s ass, my movements gentle so as not to wake him. I kissed his neck, savoring the taste of his skin as I thrust slowly, the sensation overwhelming me. This was it—he was mine, and I was his, and we could have nights like this whenever we wanted.
1 month later (Evan’s POV)
What Dar didn’t know certainly wouldn’t kill him—at least not his current body. His grandson, however, not so much.
Having taken all four doses of the CRISPR treatment I developed, Dar permanently settled into his new body. The treatment had altered his genetic connection so profoundly that he was no longer “sufficiently related” to his old body to undergo the swap. But neither he nor his grandson knew that.
When Dr. Jacobs initiated the swap that next day, it was too much on Dar’s old body and caused him to pass away. Dr. Jacobs caught on almost immediatley, but was more than willing to keep a tight lid on the whole situation.
As for Dar, he seemed to cope surprisingly well. He’d come to me, seeking comfort and support after the incident. One evening, as we lounged together, his hand resting casually on my knee, he looked at me with a mix of vulnerability and affection.
“Evan,” he said softly, his eyes meeting mine with a hint of nervousness, “I… I really appreciate everything you’ve done for me. It’s been so hard, but you’ve been there for me.”
I smiled, giving his hand a reassuring squeeze. “Of course, Dar. I’m here for you, always.”
He took a deep breath, his voice wavering slightly. “I’ve been thinking. I know it’s soon, but I’d really like you to be my boyfriend. You’ve shown me so much kindness, and… and I just feel a connection with you.”
His words made my pulse quicken, and I leaned in closer, my lips brushing against his ear. “Dar, I’ve felt the same way. I’d love to be your boyfriend.”
His eyes sparkled with a mixture of relief and anticipation. “I’m glad to hear that. I’ve been wanting this for a while.”
As we moved closer, the heat between us intensified. I could feel the electric charge in the air, the promise of something more. With a teasing smile, I ran my fingers along his jawline and down his neck, feeling his pulse quicken.
“Why don’t we make the most of tonight?” I suggested, my voice low and inviting.
Dar’s eyes widened with desire, and he nodded, taking off his shirt. “I’m ready if you are.”
