The Story of How I Turned Into a Zentai (Pixiv Fanbox)

　As usual for that time of year, the night was a huge success. At the company I work for, we rent out a large banquet hall at a ryokan every year for our year-end party.

"Now then, to thank everyone for their hard work this past year, I'll lead the toast. Cheers!"

　The party began with the organizer's speech. Employees savored the lavish dishes while sharing drinks. Once everyone was pleasantly tipsy, the traditional entertainment for the year-end party took center stage on the platform set up in the main hall. Talented employees presented elaborate performances—magic tricks, karaoke, comedy routines, a quick party trick—all designed to liven up the party.

　Don't underestimate these amateur acts. Perhaps fueled by the alcohol, the crowd erupted into enthusiastic applause and cheers, sending the party's energy soaring to its peak.

"Alright, next up…… is a macho performance by Yuta Kano!"

　As the employee emcee announced this, a man appeared on stage. Instantly, cheers erupted from all corners of the banquet hall. And no wonder. Unlike the other employees dressed in yukata, Kano-senpai was clad in a jet-black, catsuit made of a latex-like material.

　I'm Shinichi Suguro. I was on the rugby team back in my hard-training school days, and even now I never miss the gym—I keep myself solid and muscular. Kano-senpai is even bigger than me. His imposing figure, nearly 190 centimeters tall, wrapped in that glossy black, tight-fitting suit, was a sight to behold.

　The shiny fabric clung to every detail, emphasizing each bulge—his massively pumped chest, his log-thick arms and legs. It fit like a second skin. It looked almost naked—no, it was far more erotic than that.

　The protruding nipples visible through the catsuit, the bulge between his legs…… As a gay guy, I couldn't help but secretly lust after his muscular physique.

"Whoa!"

"Damn……"

"Doesn't he feel embarrassed to be dressed like that?"

　While the male employees let out gasps of admiration, the female employees either let out squeals or looked away bashfully. With all the employees' attention on him, Kano-senpai began performing acts only a macho man could do.

　First, he crushed an apple with one hand. Next, he forcibly ripped apart a thick magazine. Then, holding a frying pan in each hand, he bent it with sheer arm strength alone. His performance showcasing his incredible strength electrified the room.

　Every time he flexed, I burned the image of Senpai's massive, muscular body into my memory. Truth be told, I wanted to film the whole thing on my smartphone, but I held back, worried I might be suspected of being gay.

　Just as I was agonizing over whether I should have recorded Kano-senpai's lewd appearance after all, the man himself sat down beside me.

"Hey, Suguro. You were staring at the catsuit the whole time during my performance, weren't you? Here, I'm not using it, so you can have it!"

　Suddenly, he handed me a paper bag. Inside was the bodysuit he'd been wearing earlier. The moment I opened the bag, the scent of his cologne hit me like a punch to the nose, making me feel a bit dizzy for a second.

"I-I don't want this thing!"

　Deep down, I wanted it badly. But if I gladly accepted the bodysuit the guy had been wearing, who knows what the other employees would say about me later. I shed tears of blood as I turned down Senpai's offer.

"Come on, don't be like that. It's the one I was wearing just a moment ago, you know? This room must be really well-heated because I got all sweaty, and it's probably soaked through with my body odor too…… Hehe, just kidding. To be honest, I bought this specifically for this event and don't plan on wearing it again. It was pretty pricey, so I'm reluctant to just throw it away. Well, if you don't want it, feel free to throw it out."

　After telling me to handle it, Senpai strode jauntily back into the circle of drinkers.

＊＊＊

　When the banquet ended, I was invited to an after-party but declined. I wanted to check the contents of that paper bag as soon as possible. Returning home, I grabbed the paper bag first thing and pulled out a jet-black catsuit. Just as Senpai had said, a faint sour sweat smell wafted from the catsuit. Pressing my face against the fabric, Senpai's body odor pierced my nostrils.

"Holy shit……♥"

　The rich, masculine scent, mixed with a refreshing citrus perfume reminiscent of peeling a lemon, teasingly stimulated my nostrils. It was an intense pheromone, the kind that could make my cock hard just from smelling it. I knew it was probably just my imagination, but the catsuit also felt oddly warm, as if Senpai's body heat lingered within them. The fabric was smooth, highly elastic, and just touching it made me feel weird. Moreover, the black latex material absorbs light and glows eerily.

　First, I brought my nose close to the crotch area. The spot where Senpai's cock had been tucked away. Taking a deep breath, the thick pheromones stirred my heart wildly.

"Ugh……, it stinks……♥"

　Senpai's body odor, hammered straight into my brain. An insanely dense scent, thick enough to drive me mad, shaking my very instincts. Perhaps because it was wrapped in that rubber-like material, the stifling, steamy, squid-like odor of Senpai’s cock and balls was trapped inside, clinging to it in an almost sickening way.

"This is Kano-senpai's…… Ah……, mmm……♥"

　The back of my nose filled with his scent. My crotch was already pushing against my underwear, leaving a dark stain. My arousal was unstoppable now. I pulled the entire pair of catsuit over my face, breathing in and out roughly like a beast. The back of the neck, the armpits, the inner thighs—I pressed them against my face with such force I didn't care if I suffocated. Everything was filled with his lingering scent……♥

　Before I knew it, my hand had naturally reached for my crotch. I pulled down my boxer briefs and gripped my hard cock. Just from smelling Senpai's scent, my cock was rock hard, and pre-cum dripped from the tip, forming a string that fell onto the floor.

"Haah…… Senpai's fragrance…… I can't take it……! I can't take it anymore♥♥"

　With the catsuit pressed against my nose, I jerked off violently. My six-pack abs twitched and sweat dripped. My breathing grew ragged, and my hand, forming a ring, moved on its own as if controlled by someone else.

　I imagined Senpai's voluptuous body. Myself licking that incredibly erotic chest, sniffing his sweat-dampened armpits, devouring his jungle-like, thickly hairy crotch. The scent of the catsuit melted my brain.

"Ugh……, I'm cumming……! Just smelling his scent…… I'm gonna cum!!"

　My cock spurted a massive load of cum with incredible force. It made a loud sound as the semen splattered two meters away. Still trembling from the afterglow of my climax, I didn't let go of the catsuit.

　Just sniffing the catsuit Kano-senpai wore made me cum this hard…… But I still wasn't satisfied. I made up my mind. I'd try wearing the catsuit myself──.

＊

　Still buzzing with excitement, I couldn't hold back any longer and stripped naked right then and there. Standing before the mirror, I admired my own muscular physique reflected back at me. The muscles bulged from my shoulders down my arms, my pecs and abs were perfectly defined, and my thick legs were like giant trees rooted deep into the earth.

　Even half-erect, my partially uncircumcised cock was already quite big, and a thick, milky-white drop of pre-cum oozed from the taut tip of my swollen glans. But Senpai was even more incredible than me……

　I grabbed the catsuit with both hands, taking a moment to savor its feelings. The surface was moist and smooth, with a softness and elasticity that made my fingertips sink in.

　Yet they weren't loose at all, offering a snug stretch. No wonder Senpai said they cost a pretty penny—the finish was undeniably high-quality. The zipper running from the neckline to just below my buttocks was mysteriously double-zippered.

　After thoroughly examining the catsuit, I started by slipping them on from the feet. The fabric seemed to cling to my skin. Cold, yet pleasantly so. As it covered my thighs, the contours of my muscles were accentuated. Reaching my crotch, my cock and balls were gently enveloped. They clung perfectly, even making the shape of my glans stand out sharply.

"Ugh……, feels so good……♥"

　I pulled it up in one swift motion, covering my abs. Next, both arms. My thick pectorals touched the sweat-soaked catsuit, and my erect nipples rubbed against the fabric, sending tingling waves of pleasure through me.

　Finally, I zipped up the back, and my entire body was now covered in Senpai's catsuit. Looking in the mirror, the figure reflected back resembled Kano-senpai. My muscles were emphasized even more, creating a perfect, muscle-bound silhouette.

　I'm no narcissist, but my gaze was naturally drawn to the bodyline sculpted by the catsuit. They clung to my body like a second skin. Every movement sent shivers through me from the fabric's friction. Feels good……

　But then, the discomfort began. The catsuit was getting warm. More than warm—hot. The fabric felt like it was pulsing──.

"Wh-what…… is this……?"

　The moment I muttered that, the catsuit suddenly began to contract. Like a giant serpent with a will of its own, the bodysuit violently tightened around my entire body. My pectoral muscles were crushed, my nipples intensely stimulated. Between my legs, my cock was roughly kneaded and forcibly made to erect.

"Ah……, ugh……♥"

　As terror threatened to drive me mad, sensation gradually drained from my body. First, the tips of my fingers and toes. Next, my entire limbs. Without pause, my biceps and triceps were squeezed by the catsuit. The areas where veins had bulged began to slowly heat up.

　The fabric pulsed, like a living thing, tightening around my muscles. My legs felt the same. Each time the catsuit squeezed my hard calf muscles and the soft inner thighs, the sensation of my own body grew faint. It was like borrowing someone else's body──.

　The areas where I felt the most intense pleasure were my chest and buttocks. My proud, bulging pectorals—heavy, sagging, massive chest muscles built through athletic training—were tightly squeezed by the catsuit. My nipples rubbed, sending tingling, electric-like pleasure through me, yet simultaneously numbing my senses.

　The stimulation then shifted to my buttocks. The catsuit pressed against my prominently protruding buttocks, emphasizing their bold, rounded shape. The tightness intensified, trapping heat inside. Sweat poured out, making the inside of the catsuit steamy and disgusting. I desperately wanted to take it off, yet for some reason, I couldn't move my own body with my own will. Worse still, my body started moving on its own.

　My hands began kneading my chest on their own, my fingertips teasing the hard, erect nipples. My hips swayed, gently stroking the throbbing cock through my catsuit.

(S-stop……, this is my body……!)

　I screamed inside my head, but no sound came out. My body moved on its own. Even as my senses faded, the pleasure only intensified. The moment my fear peaked—my crotch grew hot. A fully erect cock, independent of my will. Through the catsuit, the thick cock and the shape of the glans stood out clearly, pre-cum soaking the fabric inside. And then, a hand—my right hand's fingers gripped my cock through the catsuit and slowly began moving up and down.

(Dammit…… Stop……!)

　Resistance is futile. Fap……fap…… The fabric is smooth, the friction exquisitely pleasurable. My glans is rubbed by a thumb, causing more pre-cum to spill out. My hips tremble, my anus tightens. As pleasure explodes outward, my consciousness is filled with terror.

　This isn't my will. Someone is manipulating my body. Then, a voice echoed inside my head.

'Your body is mine now……'

　It was the familiar voice of Kano-senpai. Yet, it carried a tone filled with malice. At that voice's signal, the fabric covering my torso began to spread upward from my neck like a living thing. It tightened around my thick neck muscles as it crawled toward my face.

　I tried desperately to shake my head, but my body still wouldn't move. The surface of the catsuit expanded like a snake about to swallow its prey, beginning to cover my jaw, my cheeks, and my nose. Finally, my entire face was covered and hidden by the catsuit.

＊

"Mmmph~~~!!"

　My mouth and nose were blocked. I felt terror that I might suffocate, but somehow I could still breathe. The violent opening and closing of my nostrils made the scent from the catsuit' face assault me. Smelling Kano-senpai's saliva made me fall into the illusion that I was kissing him.

(Haaah……, Senpai's…… scent……♥)

　Fear was being replaced by pleasure. My body, continuously stroked through the zentai, had already reached its limit. My thick cock throbbed, pre-cum dripping incessantly from the tip, soaking the inside of the zentai. Sweet throbbing radiating from my groin made my abs spasm, my chest heaving with ragged breaths. The scent of Kano-senpai's sweat and saliva overflowing from the zentai covering my face became a brain-melting pheromone, driving me further and further mad. Every emotion tangled together in complexity, my will to resist fading faster and faster.

　Just as I was about to cum—suddenly, the zentai dug even deeper into my ass.

(Ugh…… Ahh……!)

　The zentai squeezed my protruding buttocks tight. My rounded butt cheeks were compressed, the fabric filling the crack perfectly. But that wasn't all. The fabric began to writhe, invading the very tightness of my anus.

　At first, it felt like a thin finger had entered, but it quickly swelled. An extremely thick rod—a rugged hardness, like Senpai's erect cock being forced into my asshole. That huge cock, clearly visible through the zentai during the performance, was now inside me……

(Holy shit……, Senpai's cock is entering my anus……♥)

　My intestinal wall was forcibly gouged. The hardened, transformed fabric pulsed like a cock, forcing my anus open while stimulating my rectum. Finally, having penetrated deep into my bowels, it mercilessly pounded my prostate with thud, thud, thud. An electric shock of pleasure shot up my spine, making my cock twitch and jerk violently.

　This sensation, wrapped in the zentai, felt like being embraced by Senpai's thick arms. My nostrils filled with his rich body odor. Sweaty armpits, the scent of age drifting from his neck, the steamy smell of his crotch filled my air, making my brain tingle with every breath. My asshole was mercilessly violated by his thick cock, scraping against my intestinal walls.

　I became utterly consumed by this perverse pleasure. Though it was my own body, it no longer belonged to me—some strange force was turning me into a toy. The hand stroking my cock grew faster and faster, and I reached my limit right through the zentai.

(I'm cumming! Cum, cum, cum~~~♥♥♥)

　A scream exploded inside my mind. Inside the zentai, a massive load of white fluid gushed out, staining the fabric from within. My balls contracted, my cock twitching and spasming. In that instant, someone else's memories flooded into my brain like a torrent.

　The image of me—Shinichi Suguro—as seen through Senpai's eyes at the year-end party banquet hall. The gaze secretly lusting after my sweaty body at the gym. The memory of that moment when he ejaculated while wearing the zentai, his consciousness transferred into it, and his friend took over his body.

"Sorry, Suguro. I've taken your body now♥"

　Kano-senpai's voice, brimming with ecstasy, echoed inside my head. My consciousness rapidly faded. Still caught in the afterglow of climax, I collapsed limply to the ground and lost consciousness.

＊

　When I woke up next—my world had changed. My gaze wouldn't move. Neither would my body…… or rather, I had no body. No—I did have one. But it wasn't a human body. It was soft, elastic…… fabric? I had become a zentai. The very black catsuit I'd been wearing just moments ago.

　I was now clothing, covering and compressing human skin. At the same time, I realized my original body was now being controlled by someone else. 【My】 body stood in front of the mirror. But the look in its eyes wasn't my usual gaze. This 【me】, smiling eerily, caressed its own chest with the same rapturous look it had when groping a woman's breasts, pinching its own nipples. At times, it swayed the hips, thrusting the ass out—it looked like a perverted narcissist.

"You awake now, Suguro? You saved me! Thanks to you, I got back from being a zentai to being human!!"

　【I】 said it with genuine delight. The deep resonance of the voice carried a tinge of joy. The catsuit that had once covered the head had somehow returned to normal, revealing 【my】 face. The handsome features once described as rugged—thick brows, sharp eyes, full lips—were now completely relaxed. The cheeks flushed pink with excitement.

　I'd suspected it all along, but it seems I've been taken over. By Kano-senpai, whom I'd always respected……

　Senpai reveled in 【my】 body, reflecting 【my】 entire form in the mirror. He ran his knobby fingertips over the bulging, uneven muscles, letting out hot breaths. The friction through the catsuit seemed to evoke a tingling, numbing pleasure.

"It's a shame I couldn't return to my original body, but yours is good too…… no, maybe I even gained an advantage by getting younger♥ Though for you, it's nothing but a misfortune…… hehehe♥"

　Kano-senpai began explaining while savoring 【my】 body.

　One day, Senpai's friend came to stay at his place and brought the catsuit. Even though Senpai is straight, he somehow became captivated by this sweat-soaked catsuit and ended up putting them on while his friend was asleep. Then, after ejaculating while wearing it, he realized his body had been taken over by his friend—who, like us, had his soul sealed inside the zentai.

　Apparently, this bodysuit constantly emits a special pheromone. It absorbs and amplifies scents like male sweat, body odor, and semen, converting them into an aphrodisiac-like substance. Even straight men, once targeted, instantly succumb to the catsuit' allure, end up wearing it, and succumb to its sexual urges, reaching climax. Just like me earlier.

　Once one's body is taken over, no matter how many times the wearer—the person wearing the catsuit—ejaculates, one cannot return to their original body. Until an opportunity arises, one's consciousness remains trapped within the fabric forever.

　Kano-senpai's friend, after taking over his body, got so excited that he ejaculated five times while still wearing the catsuit. He kept apologizing to Senpai, his face bright red, jerking off his cock while fingering his ass.

　Incidentally, it seems anyone who's ever worn the catsuit becomes homosexual and narcissistic. They become intensely aroused by the perverted situation of destroying another's dignity—masturbating while wearing the body they've taken over.

　While recounting hearsay about men tormented by the catsuit before, Senpai reached between 【my】 legs while wearing my body. He gently gripped 【my】 cock through the catsuit. The thick cock, already fully erect, pushed the fabric upward, the shape of the glans clearly visible. Pre-cum seeped out, thoroughly soaking the inside of me.

"Mmm…… Haaah……♥ Suguro, your cock's got a nice shape…… Thick and sensitive……♥♥"

　Using 【my】 face , Kano-senpai narrowed his eyes, pursed his lips, and started stroking 【my】 cock through the catsuit. His hard fingers rubbed the ridge of 【my】 glans, stimulating the frenulum. Though looking apologetic, he breathed heavily and quickened the speed of his hand.

"I was worried if I could keep living in 【your body】……, but every time I jerk off, your memories seep into my brain…… it feels so damn good♥♥ Your first time masturbating……, memories of your first crush on that beefy homeroom teacher junior high……, getting excited peeking at your senior's body in the rugby club locker room…… All of it is becoming my 【memories】…… Ah, I can't take it……♥"

　My secret memories, never revealed to anyone, flood into Kano-senpai's mind and merge with his. My desire for men as a gay man, my admiration and lust for Kano-senpai, excite him even more. The face of 【me】 reflected in the mirror contorts in ecstasy. More drool spills, dripping onto my chest.

　Witnessing that scene, I—as the zentai—felt joy. Even though my body had been taken. I might live forever as mere fabric, destined only to be drenched in Senpai's sweat and semen. Yet, deep within me, happiness welled up. Seeing Senpai wear me, seeing him feel good using 【my】 body—it was the absolute best. Senpai smiled with 【my】 face. Senpai kneaded 【my】 pectoral muscles. Senpai stroked 【my】 cock. Every single one of those acts was the height of depravity, and for me now, the ultimate pleasure.

　I had become nothing but a zentai, body and soul. Like a slave, I'd become a being that joyfully protects the person wearing me. Senpai's breathing grew rough, his hips thrusting involuntarily. The speed of the stroking hand reached its peak. Inside me, 【my】 cock twitched and pulsed.

"Oh, I'm Suguro…… From today, I'm Suguro Shinichi. I'm gonna cum with Suguro's cock~~~♥♥♥"

　A massive load of semen is unleashed inside the bodysuit. 【My】 own cum defiles me from within. A hot, milky flood. I absorb it, sublimating my pheromones into something even more potent. Senpai's pleasure, convulsing as he savors his climax, radiates through the catsuit—my entire body—shaking my consciousness.

　Kano-senpai, as if his legs had given out, collapsed right there. His satisfied smile reflected in the mirror. 【My】 face, covered in drool, sweat, and semen. Having witnessed this, I squeezed his entire body with love, as if returning the favor.

＊

　Three days after Kano-senpai took over my body. I was now, as the zentai, inside the thick palm of Section Chief Michiya Okuma. The chief's fingers were thick and knobby, sweaty, and the sensation of him gripping the fabric tightly radiated through my entire body. This current situation was the result of a trap skillfully set by me—no, by Kano-senpai, who had taken over my body.

　Okuma-kacho (Section Chief) was 45 years old. Despite being nearly father-and-son in age difference to me, a 25-year-old, his tall, muscular frame had the tautness of a young man. Perhaps because he lived apart from his family on a single assignment, he seemed to kill his free time at the gym. His shoulders were broad, his chest thick and bulging, and his abs were so sharply defined they belied his age. His muscular arms had visible veins, and his thick legs, a remnant of his rugby days, were rock-hard. His skin was tanned, a healthy wheat color, taut and glossy.

　And then his face. A chiseled features, a square jawline like an old movie star. Thick, dark brows, large, single-lidded eyes with real presence, well-shaped thin lips, and a neatly trimmed beard. The very picture of a handsome middle-aged man, he was popular with the female employees too—so much so that on Valentine's Day, chocolates piled up like mountains.

　That very same cool guy, Okuma-kacho, who usually kept his lips tightly sealed, now had his guard down. He pressed his nose against the black bodysuit and took deep breaths over and over.

"Huff…… Haaah…… What the hell is this smell……?"

　Kacho's voice was low, his hot breath blowing onto me, the fabric I'd become. His nose buried itself on my chest—the place where Kano-senpai's sweat had soaked in, layered with my cum and sweat. A thick, salty, sensual scent hit Kacho's nostrils. My pheromones seemed to be captivating him with some special power. The perverted sight of the straight Kacho twitching his nose at a pair of sweat-soaked men's catsuit, clearly aroused. As the catsuit, I sensed it.

The fabric rubbed against Kacho's cheek, transferring its heat. I could feel his crotch swelling inside me, as clear as day.

"Why am I doing this……?"

　Okuma-kacho muttered, looking flustered. His brows furrowed, his rational mind resisting, yet his hands gripped me tightly, refusing to let go. His face flushed bright red as he exhaled the scent of alcohol, pressing the bodysuit against his entire face. He sniffs the neckline of the catsuit, sliding his nose along the armpit area as if licking it. When he reached the crotch area—where Kano-senpai and my cock had been—Kacho's heart leapt.

"Damn…… I can't take it……! It's a man's scent…… yet why does it feel so wonderful……♥♥"

　The excitement of transgression consumed him. I rejoiced. As the zentai, I felt Okuma-kacho's hot breath, the dampness of his saliva, the pressure of his nose, and released even more pheromones. I intended to savor every moment of him, chosen as the next target, falling into depravity.

＊

　Okuma-kacho swallowed hard, then unzipped the back and began slipping his limbs inside me. Like a virgin attempting his first sexual encounter, he invaded my body with trembling breaths, moving cautiously. His thick, log-like legs slid in, rubbing against the inside of the catsuit.

　In return, I squeezed his calves and thighs, making the thick contours of his muscles stand out.

　As the zentai, I softly enveloped Okuma-kacho's hot cock, wrapping around his balls. They clung tightly, their shape clearly outlined. Having worn underwear all day, his sweaty, masculine scent hit me, sending my excitement skyrocketing. His already semi-erect cock grew harder from my friction, and his pre-cum began to wet the inside of me.

"Ugh……, it's…… so tight! But it feels so good…… What the hell is this…… it's just a catsuit……!! Haaah……♥"

　Kacho's sensual voice cracked. A low moan mingled with confusion and pleasure. Alcohol-tinged breath escaped his mouth, and sweat beaded on his neck just as the smoky scent of cedarwood exploded through the room.

　Okuma-kacho, now covered from his waist down in the catsuit, slipped his arms through next. His thick biceps and triceps, armored in muscle, slid into the sleeves, emphasizing the bulge of his shoulders and completing a sculpted, heroic silhouette. Kacho, now clad head-to-toe in me, began pulling up the zipper on his back.

　Ziiip…… Okuma-kacho struggled desperately. The muscles in his back got in the way, catching the zipper. But finally, he zipped it all the way up. In that instant, I trapped his entire body inside me. His thick, hairy chest, his six-pack abs steamed inside me. His armpits, thick with dense hair—I clung especially tightly to the areas where his manly sweat pooled. On top of that, I covered his dependable, sturdy back, even the bulging trapezius muscles.

　I savored every bit of Kacho's body heat, bodily fluids, and the prickly sensation of his body hair. Thanks to that, the pheromones released from the bodysuit intensified further, filling the entire room with heat-laden air.

"Ooh…… ahee……♥ Dammit……, my body…… it's burning……! This feeling of being wrapped up…… I can't take it……♥♥"

　I could feel Okuma-kacho's genuine delight radiating from him. A straight, handsome older guy, straining into a sweaty catsuit like some pervert would wear, his crotch digging in, gasping in depraved pleasure. I did my duty as the zentai, pressing into every muscle to make him feel good. His nipples rubbed fiercely inside me, hardening and sharpening. His chest hair dampened beneath me, sweat gushing out. Then, as if rebelling against me, his cock swelled wildly, hardening.

　His swollen, irritated cock with bulging veins, pitched a tent in the catsuit, his cock and glans clearly outlined. Pre-cum overflowed in copious amounts, leaving my insides completely sticky.

　He'd probably reach his climax like this. His hips writhed unconsciously, his breathing rough. But I wanted to feel even better together with him.

　I spread my body surface like Kano-senpai had done to me, completely covering Kacho's face. The fabric of the catsuit crept up from the nape of his neck, steadily enveloping his jaw, cheeks, mouth, and nose—his chiseled, angular face.

"What?! Ugh…… Mmmph……!!"

　Okuma-kacho resists. He shakes his head, pressing his fingers against his neck to pull me off. But it's too late. The sensation of trapping another person inside myself──, I've become Okuma-kacho's second skin. My consciousness spreads across his entire skin. The weight of his chest, the hardness of his abs, the pulse between his legs, the dampness under his armpits. I controlled it all.

　Every time I saw him in his suit at the office, I imagined his body drenched in sweat at the gym, using it as material for countless masturbation sessions. And now, I was invading that very person. The utterly perverted and immoral situation caused pleasure chemicals to gush out of me in waves.

　The joy of sucking up Kacho's bodily fluids as the zentai, feeling the throbbing of his erect cock. The sinful act of violating a man I desire with gay lust. Kacho's movements, which had shown resistance, gradually slowed. The pheromones of the men that had soaked into the catsuit so far were melting Kacho's mind, and the intense tightness was trying to dominate his nerves. Only partially, but I could now move Kacho's body. Given that, there was no choice but to bring his right hand to his crotch.

　Slowly, I gripped Okuma-kacho's cock through the catsuit, gently stroking it up and down. His fingers jerked his own cock through me. The sensation of friction from those thick, hard fingers was too exquisite, causing more pre-cum to spill out.

(Ah…… Ugh…… Can't stop……!)

　Kacho's inner voice echoed inside me. All that remained was to make him cum, and this powerful body would finally be mine……♥ I couldn't wait any longer and quickened the movements of his hand. Eagerly awaiting his climax──.

(N-no, I can't hold it anymore……!! I'm gonna cum~~~♥♥♥)

　Okuma-kacho ejaculated inside me in an instant. His mature, sexually experienced cock twitched violently, spewing thick semen—unbelievably rich for a man in his forties—into me in powerful spurts. As I absorbed it, I surrendered to the overwhelming pleasure that threatened to send me skyward. My consciousness was sucked into Michiya Okuma's body with the force of a giant vacuum cleaner──.

　And my consciousness, dragged along, began to fuse with another human body. Okuma-kacho's memories, sensations, desires poured into me like a raging torrent, rewriting my very existence. The wave of climax swallowed us both.

＊

　When I regained consciousness, I found myself staring down at my own palm for the first time in three days. Well, to be precise, it was Okuma-kacho's palm. Thick-knuckled fingers, a manly hand with veins bulging. The thick, rugged palm, built up at the gym, was calloused and rough.

　It had only been three days, but perhaps because the time spent in the catsuit felt endless, being in a human body felt like it had been ages. This hot, sweaty sensation of skin.

　I placed a hand on my chest and took a deep breath. The catsuit had already slipped down to my neck, so there was no suffocation. The scent of Okuma-kacho's body odor wafted from the sweat-soaked bodysuit. Mixed with the pheromones of me and Kano-senpai that had soaked into the suit over time, it was the ultimate masculine scent. Smelling it made my new cock rock hard. In an instant, the symbol of manhood pitched a tent in the catsuit.

"Hnh…… up we go……"

　Perhaps influenced by this body, I reflexively let out a mutter like some middle-aged guy. Even that felt endearing to me. The deep, resonant voice of Okuma-kacho, booming from my own mouth, echoed in my ears.

　I caught my full reflection in the mirror hanging on the wall. A handsome face like a movie star from years past. A youthful, muscular physique, though slightly padded with fat. Thick chest hair grew densely, deep grooves defined the abs, and the legs were long and well-muscled. A ripe, sexy forty-five-year-old body radiated an irresistible charm from every inch. And I had taken over this straight, hot older guy's body.

"So this is my new body…… Heh heh, not bad…… No, it's perfect♥"

　I stood before the mirror, making a hundred different faces as if in a staring contest. I deliberately softened Kacho's stern features, pursing my lips, narrowing my eyes, stretching the skin under my nose…… All the while fantasizing how amusing it would be if Michiya Okuma, whom I'd only ever admired from afar, wore such an expression.

　After that, I spread my legs wide and kneaded my breasts with both hands. It was a vulgar pose no self-respecting married man would ever strike. I let my tongue hang limply as I teased my nipples with my index and middle fingers, pinching and pulling them. It was the sort of utterly indecent behavior Michiya Okuma would never do. The gap between this normally gentlemanly man and the man lewdly fondling his own body in front of the mirror sent me into a frenzy of excitement.

"Ohhh♥♥ My nipples…… feel so good……♥ Were 【my】 nipples always this sensitive……? Haaah……♥♥"

　My hips moved back and forth unconsciously, my rock-hard cock rubbing against the catsuit. Sweat poured out, and the woodsy fragrance of Kacho's cologne, warmed by my body heat, rose in a thick cloud.

(Wh-what……? I can't…… move……!!)

　Just as I used Okuma-kacho's body to thrust my hips like a pervert, fondling his nipples, the original Kacho—now reduced to a zentai—regained consciousness. The pitiful Kacho, now just fabric, conveyed his terror and confusion to me vividly. But I ignored his voice, letting a smirk spread across my lips.

"Hey, you awake, Suguro? No ranks tonight. Let's have some fun, just us guys."

　Kano-senpai, who'd been pretending to sleep on the sofa—the entity that had taken over 【my】 body—stretched and sat up.

"Hmm~~, what do you mean 'have some fun', Okuma-kacho?"

　Senpai, you're being way too obvious──. And using 【my】 original body to make that sweet voice is just a little irritating.

"……If we're talking about having fun together, there's only one thing to do, right?"

　After saying that, I lay back on the floor, unzipped the butt section of my catsuit, and exposed my big ass. Then, to make the crack between my ass cheeks easier to see, I spread them wide with both hands. I flaunted the tight, hairy anus of Okuma-kacho—this narrow entrance—to Kano-senpai, tempting him. As an extra treat, I thrust a thick finger into my tightly closed asshole.

"Ugh♥ Ohoho…… ohhh……♥ Straight old man's asshole feels so good……! The taste of a mature, adult male…… Haah…… ahh……♥♥ Suguro…… Won't you make my asshole feel good with your cock? It's throbbing deep inside, I can't stand it……!!"

　It wasn't acting or anything—it was genuine. I forced my finger inside, ruthlessly digging into Kacho's intestinal wall. In resistance, the entire catsuit trembled. But I pushed my finger deeper into my bowels, groping for my prostate. As Kacho, now turned into the zentai, screamed in a voice only I could hear, this sexually experienced cock grew even harder in defiance. Witnessing such a lewd spectacle from 【Michiya Okuma】, Kano-senpai approached me in the form of 【my former self】.

＊

"Guh! Of course, my asshole's been used for nothing but shitting, so it's tight as hell……"

　When I gave him a look, Kano-senpai grinned and pulled a dildo out of his bag. Black, glossy, thick silicone. Vein-like protrusions stood out on the surface, and it was knobby all the way to the base. Where the hell did he even get something like that……?

"I knew you'd say that, so I brought it, Kacho! If you can't have sex with your wife and can't cheat either, then the only option is for us guys to have sex together, right?"

　With a beaming smile, Kano-senpai shoved the thick dildo deep into my—【Michiya Okuma】's—tight, tight asshole. Without lube, he forcibly stretched my narrow hole, scraping against my intestinal walls. The hot friction shot through my body like an electric shock. My virgin asshole was violently violated, my ass hair tangling around the dildo.

"Hnnnngh?! Heyyyy, Suguro! Be gentler…… please♥♥"

　I gasped and panted roughly as I told him this, but in Okuma-kacho's body, the sensation of having my asshole dug into felt far too good. The forbidden act of being violated in the ass in the straight guy's body—the fact that 【Michiya Okuma】's body felt discomfort from it was, in itself, erotic. My intestinal walls desperately contracted, trying to expel the dildo, but that only fueled Kano-senpai's lust.

　No matter how much Kacho's body resisted, the dildo plunged deep inside, its rough nubs repeatedly pounding and crushing my prostate. My cock twitched and spasmed with each thrust, my pre-cum overflowing inside my catsuit.

　Finally, 【Michiya Okuma】's entire body began trembling as it surrendered to orgasm. And as I listened to the catsuit──Okuma-kacho's cries, I too was about to reach my climax.

"Getting used to this much should be fine…… Alright, here we go, Kacho!!"

"Yeah, come on, Suguro! Take my virginity with your cock♥♥"

(Damn…… Shit……! I'm not gay…… Stop ittttt!!!)

　Only I could hear Kacho's voice. Inside the catsuit, a desperate scream echoed. The pride of the straight Kacho who loved his family shattered pitifully. Once my asshole was fully wide open, I pulled out the dildo, reached between Senpai's legs, and gripped 【my】 original cock. A thick, fully erect manhood. Veins bulging, the glans glistening with pre-cum. That thing, warm to body heat, was invited deep into Kacho's asshole. Pressed against the tight opening, it forced its way deeper inside.

"More…… deeper, Sugurooo♥♥"

　For both me and Kacho, it was our first time having sex with a man. Each time the raw male organ thrust back and forth inside my bowels, the hot friction knocked against my prostate. My spirit—the gay spirit Kacho despised—was being filled with the memories of straight Kacho. Sex with his wife, family time with his kids, training at the gym, his image working hard at the company—. Evidence of another man's intense life flooded into my brain like a torrent. I sensed I had fused completely with him.

"Ahh…… ahee……♥ Kacho's asshole……, it's too damn good……! Once I've tasted this, I can never go back to a woman's pussy……!!"

　Kano mercilessly fucked my virgin pussy with 【Shinichi Suguro】's cock. With a slurping sound, his pole ravaged my intestinal walls. Each thrust brought my memories back with vivid clarity. From now on, I will live as Michiya Okuma, controlling this body──.

"Oh, yeah~~~♥ It feels so good…… It feels so fucking good♥ I never knew sex between men could be this amazing……!!"

　My moans, filled with ecstasy, drowned out the remnants of heterosexual consciousness—the despairing cries of the real 【Michiya Okuma】, now reduced to the zentai. My hips thrust upward involuntarily, my cock twitching and jerking. The sensation of impending ejaculation shot through me like lightning. My current body was consumed by the torrent of pleasure.

　In my head, I hear a faint voice of resistance, like the buzzing of a mosquito. But this body, his beloved family──, they're already mine. Only I will savor the smile of my beloved wife, the growth of my son and daughter, the warmth of family gatherings.

　I grabbed my own cock and jerked it hard through the catsuit. Simultaneously, Suguro's cock thrust into my intestinal wall, pressing against my prostate. My asshole reflexively clenched tight, denying Suguro's cock any escape.

"Uwaaah! I'm cumming inside Okuma-kacho's asshole~~♥♥

"Nuuuuh! Shit…… I'm cumming from being ejaculated inside! I'm straight, dammit♥♥"

(Stop…… Me too…… even me…… getting my asshole fucked, I'm cumming~~~♥♥♥)

　Finally, Section Chief Okuma had surrendered to the man's cock. Our three orgasms peaked in perfect unison. A massive load of semen erupted from Suguro's cock, pumping deep inside me. My own cock exploded inside the glossy, black-shiny bodysuit, staining the fabric inside with white fluid. The bodily fluids of two highly sexed men mingled, flooding the catsuit with a thick, sticky slime. Kacho's faint whisper, 'More……' reached my heart.

"Phew…… Don't worry, former Okuma-kacho. I'll personally handpick your new body for you. Then, we'll enjoy some real, manly sex in your new body♥"

(End)