Transcript
Ian and his friend, Ben, had gone down to a newly opened gym. It was summer break and the two felt like it was time to put in some training before school reopened. Looking around the place, they were impressed with the lineup of latest fitness machines and gear. The one thing that caught their attention though, were the girls...in fact, besides them, the other gym goers all seemed to be women...

Thinking nothing of it, the pair chose a quiet corner to begin their workout with a quick warmup. Ben being the more fit of the two, decided to let Ian go first, taking the role of a spotter as Ian was left to lift a hefty pair weights.

As Ian began lifting though, Ben's body begins to change, his muscles twitching under his skin as they begin to bulk up, his skin shimmering with warmth as body hair shrivelled off and blemishes vanishing, leaving them smooth and sensitive. Eye's watching Ian intently as he goes past his 5th rep, Ben remains oblivious as his waist begins to pinch inwards, his hips exploding outwards as flesh shifts into his lower regions, his ass plumping up yet remaining firm as a healthy layer of fat pours into his rear.

"C'mon dude, almost at 15!" Grunting with effort, Ian doesn't notice his changing friend beside him as Ben's top begins to stretch, straining as his chest inflates with fat and mass, the once flat chest turning into a sizeable pair of breasts that remained perky even without the support of a bra as Ben's back arches inwards, further emphasizing his assets.

"20! You can do it!" At this point Ian was struggling to lift the heavy weight, his eyes shut tight in effort. Ben was barely recognizable anymore, his body feminizing rapidly with each passing second. The slim young man now looking like a well-built tomboy as his body continues to change, the next to change were his legs, as fat begins to fill around his muscled thighs, the curvaceous legs complementing his wide hips as he adjusts his posture, slanting to the side with a dainty hand on his handlebar hips. Looking down at Ian's struggling face though, new feelings and memories begin to ovrwrite Ben's identity as the buldge in his tight fitting pants begins to twitch, a slight tan emerging across the smooth skin of his body as his almond shaped eyes glaze over, a subtle blush forming over his rosy cheeks.

Instead of a friend he'd met in high school, Ben's mind began to see Ian as more than just that; playing together as kids, going to the same school, finally confessing to Ian before they graduated, dates, training and studying together. It all came flushing into his mind as Ben continued to stare vapidly at Ian, having lost track of his reps at that point as he continued to revel in the new memories of his time with Ian, a particularly raunchy one sending shivers of ecstasy up his spine. After all, Ian was the first man to take her virginity, despite his lanky appearance, he was a beast in bed...

A feminine gasp escapes Ben's pouty lips as his manhood gives in, spasming as it retreats into the freshly formed slit between her muscular legs and cementing her new identity. Ian's sudden shout snaps Daliah back to reality. "H-H-Hey dude...a little help here?!" On the verge of breaking down, Ian's eyes snap open as a heaving set of tits flies into view, a nice set of arms lifting the weight off of him as the gentle yet gruff face of a tomboy stares down at him, her round face framed by a short cut of brown hair captivating him for a moment before Ian sits up. his friend nowhere in sight, seemingly replaced by the beautiful bodybuilder watching over him with a look of concern on her face.

"I'm so sorry babe! I don't know what came over me back there, are you okay?" Ian eyes the girl, her face twisted into an adorable look of apology as he gulps at the sight of her perfect body, seeing the girl of his dreams right in front of him had left him speechless. "Oh gosh, did you hit your head? J-just hang on a second, i'll get you some medication alright? Just sit tight!" Unable to utter a word, Ian could only watch as the girl shoots him a confident look before jogging off into the back. Leaving the confused man behind as he wonders where his friend had wandered off to...
Transcript End

One side of two part cap story i had an idea for. If you like it or want to leave some feedback, just drop a comment below!

Image by Kamenrideroz : www.pixiv.net/en/users/3076019