Sex Portals! For Science! Part III

Story by Rhazada on SoFurry

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WARNING: Extreme content, please view at your own discretion!

An erotic story series with elements of gender transformation, sex, impregnation and more! This is another set of stories marginally related to my Mega Evolution Series. Enjoy! Feedback is always appreciated.


Suddenly, several panels in the floor opened up, and before I could move, robotic arms appeared and clamped onto my arms and legs. I wasn't too worried, I knew this was probably part of the procedure, but I was now unsure of exactly what that procedure entailed. The arms clamped my wrists to the chair while others spread my legs and held them there. A different portal device appeared on a small pedestal, rising from another panel in the floor. This one was larger than the ones on the female pokemon I had just impregnated. Wider, with synthetic straps for fastening. The portal activated, and one robotic arm suspended the portal over my cock, slowly pushing forward until my entire cock and balls had disappeared into it, flush with my crotch. Two other arms tied the straps firmly around my legs and waist, stabilizing the entire apparatus such that it wouldn't budge or even move if I got up and walked around. The chair rotated to face the other side of the room, where several metal screens covered more glass windows to holding chambers. The right-most screen rose, and I looked in surprise as I noticed my portal output suspended by a chain in the first chamber off to the right, that same chamber populated by a large and obviously male serperior, with two large, light-green hemipenes at the ready.

I was most definitely straight, and I was confused as to why they had brought a male to mate with me; they must have made a mistake. The subject in the glass chamber before me however didn't seem to think so. The serperior brought his mouth to the head of my cock, licked my tip firmly with his long, muscular tongue, and sensually slid my cock between his lips, taking my cock slowly into his throat, completely deepthroating me. I gasped as his warm mouth engulfed my cock, and he began to slide up and down, sending waves of pleasure over me. Even as he pleasured me, I began to feel strange. The pleasure was stronger than it had been when I'd had a blowjob in the past, and strange, hazy thoughts of having the male inside me, of being impregnated by the strong grass-type, went through my mind. I felt him continue to suck on my cock, seeming to enjoy my throbbing cock sliding down his throat. Before long, I felt myself reaching my peak, and I gasped as the combination of his warm mouth and slick lips sent me over; I came, releasing spurt after spurt of my hot cum into his mouth and down his throat, my orgasm feeling just as strong as it had when I had impregnated the female pokemon previously. I finished cumming, feeling him swallow every drop of my seed, finally withdrawing his mouth from my member, licking the head of my cock for the last few beads of cum forming at the tip. I felt stranger still after my orgasm, my body feeling warmer than usual and I was not quite satisfied even though I had just climaxed. I felt a sudden sensitivity in my breasts, and looking down in surprise, saw that they were expanding, becoming larger and rounder even as I watched. I felt my bone structure shifting, my hips becoming wider, while my waist became slightly smaller and slimmer. My breasts continued to grow, becoming heavier and softer, finally stopping around a D-cup. I felt my face change, becoming softer and more feminine, overall less masculine, while my hair grew out, becoming longer and softer as well, finally reaching a few inches past my shoulders. Last but certainly not least, my cock began to shrink. The serperior licked my cock even as it became smaller and smaller, my balls retracting into the portal and into my body, forming a new opening, while my cock shrank to become a small sensitive button right above my new vulva.

The serperior focused his attentions on my new sex organs, his long tongue coming through the portal and sliding over my clitoris, sending shivers of new pleasurable sensations over me. I realized the serperior must have the contrary ability, which inverts stat changes in battle but also has a secondary effect. Not all pokemon that could have contrary as an ability have it, but it allows those pokemon to change a pokemon or human's gender via sexual relations and subsequent orgasm of that pokemon or human if they are initially the same gender as the pokemon with contrary. For now I was stuck; I had completely transformed into a woman, and I was surprised but now understood that being impregnated by several horny, feral pokemon was my fate. I looked nervously over at the serperior, letting out an involuntary gasp from time to time as his tongue hit my clit at certain angles; his two cocks were fully erect at this point, each about a foot in length and inch and a half in girth, tapering at the tips. The serperior seemed anxious to continue, obviously approving of my new form, and brought his large tapering cocks to the entrance of my newly-formed virgin pussy. His bottom cock slid easily into my pussy, evoking a gasp of amazement from me as I was penetrated, my voice now higher-pitched and much more feminine. I felt his cock slide deeper and deeper inside me, and his upper cock slid through the portal and over my clit, the warmth inside me and now also in contact with my clit making me moan softly. It felt wonderful to have him inside me, and as he began to thrust, two robotic arms unstrapped my arms from the chair, and I began to gently stroke his upper cock, so fascinated by the smooth warmth of his sex organ while the other one was sliding deep inside my body. I let out louder moans, my own feminine moans ironically turning me on even more, my body now female but my spirit still male (though enjoying my new feminine perks). It was pretty hot playing with his cock while he mated with me, and before long, my attentions to his cock with my hands appeared to be adequately reciprocating the amazing blowjob he had given me earlier, and I felt his cocks tense up; The head of his cock inside me flared slightly, the other cock becoming harder in my hands, and he let out a half-hiss-half-sigh as he orgasmed; hot, thick, green cum spurted from his cocks, and I sighed in pleasure and fulfillment as the jets of cum from his upper cock spurted onto my body, oozing onto my tummy and a couple spurts onto my breasts. I picked up a glob of it with my fingers and took it into my mouth curiously; it tasted leafy and savory, reminding me of a combination of fresh spinach and a mild milky goo.

I eagerly ate up several more globs of his tasty cum as he finished pumping his cum into my pussy. I was somewhat distracted with eating his cum and felt him withdraw but didn't think much of it. That was, until I felt both of his cocks slip into my pussy; I gave a surprised yelp as my already-slick vulva gave way to both of his cocks and I moaned loudly as his cocks spread me even wider, so thick and warm. They fit snugly, filling me completely, his cum oozing out of my pussy on both sides of his cocks. I looked into his eyes, and I could almost see him smirk as he began to pound my pussy in earnest. I felt his cocks massaging what must have been my g-spot, because my pleasure suddenly spiked, washing over me relentlessly as his cocks rubbed every nook and cranny of my vagina. My D-cup breasts bounced with every thrust of the powerful snake's cock deep inside me, and I took the opportunity to squeeze them, massaging them, loving how sexy I had become, and I suckled one of my breasts even as my pleasure continued to mount, the powerful snake hitting my cervix with every thrust, as though he was trying to break through. I gasped as my pleasure peaked, and I grabbed the arms of the chair as I orgasmed, panting loudly as my pussy contracted desperately around his huge members, barely able to squeeze around the sheer girth spreading my pussy. He wasn't finished yet however, and I felt my pleasure begin to mount once again as he pounded my pussy even harder. He took a long thin tentacle and brought it through the portal to coil around my clit; my eyes widened as I felt his tentacle massaging my super-sensitive clit. Another two tentacles came out of the portal, wrapping around my nipples, squeezing and massaging even as a thicker tentacle exited the portal, and before I could protest, had inserted itself between my lips. The serperior watched with satisfaction through the glass as he began to stimulate so many of my pleasure points. The combination of the cocks spreading my pussy wide even as my clit was mercilessly rubbed and my nipples were squeezed, combined with the warmth of the tentacle now thrusting into my mouth, were all enough to send me over into a string of the most incredible orgasms I'd ever had. As the first one washed over my body, my contractions around his cock and the throbbing of my clit forced me into another strong orgasm, my helpless contractions around his cocks interrupted by yet another, and as that one wound down, I experienced one last orgasm as the serperior reaching his own climax, and we cried out together (my cry was somewhat muffled) as we came, his cocks flaring inside me as his hot cum spurted into my body, his cocks pumping his hot seed into my ravaged pussy, my body quivering in pleasure as we finished together.

A few minutes later when I had come down from cloud nine, I sighed in relief. The serperior's cocks flopped out of my pussy, their job well-done, his tentacles retracting back through the portal. I was panting from the amazing series of orgasms the snake pokemon had just forced me into. I could tell I was going to enjoy whatever happened next. Just then, I felt some pressure in my tummy and watched in shock as it began to swell with developing eggs. As I looked down at my round pregnant belly, I nervously wondered what other male pokemon were going to be having their way with me...

To be continued in Part IV