Tiny spiky blonde hairs erupted from the flesh of Nils' arms, legs, abdomen and throat, and a few leaky red pimples formed beneath the faint hairs and gave the teen's flesh an even greasier oily appearance over it as his flesh grew sweatier and wetter from increasing moisture. Nils groaned loudly, bending at his waist a bit, and revealing bones along his spine were also developing a bumpier swell along its length, slowly enlarging the bony ridges beneath his skin as the bony bumps flexed even more prominently. Spiky blonde hairs covered his back in that same silky blonde glazed faint dusting as the front of his abdomen's more wolfish-styled body. Nils began screaming in pain.
Trevor gasped as the teen leaned even more forward, pushing the bony spikes along his spine even more outward until it looked like his entire waist and abdomen were becoming thinner as his ribcage enlarged slightly. He was turning more wolfish than Trevor thought he'd programmed in, but the feral werewolf form he'd imagined still stood upright, on two legs, not four. It looked like Nils may have to walk of four legs given the bony ridges of his spine. Then Trevor's eyes widened as Nils' head lifted up, revealing blue eyes now radiating with feral arousal from the change that'd happened. When Nils stood up again, the foreskin sheath around his erection began spreading up and outward as it enlarged its fleshy form towards his navel as even his navel disappeared beneath that oily growth of foreskin and made a very wolfish-looking groin at Nils' crotch as silky blonde hairs were repositioned with the flesh as his entire groin thinned and altered its shape to a more narrowed form. His entire waist area now seemed to shift more wolfish-like, too, the bones within it restructured to a strange wolf-human blend as the foreskin sheath's coloring turned a few shades darker until it's flesh became almost charcoal black. The fat swollen penis inside Nils' black foreskin's tube length from the upright curved position it now made appeared different as well. And Trevor shivered as the head of it slipped out of the black flesh and revealed it was now turning as bright a pink color as a wolf's exposed penis.
It'd clearly become the tapered shape like wolves and canines sported, Trevor realized, and Nils screamed with pain as other unplanned and unknown changes Trevor hadn't programmed in began turning Nils' penis into a pure wolf cock. The greasy glaze on Nils' increasing darker red shaft was similar to that slickness and sheen of wolves and canines moist red rocket's appeared to look as the length become obviously thinner and far more tapered. But the glaze was not just an ordinary lubricating feature to it. The filmy substance was also cum and oily perspiration, and sweaty drips spilled from the now pointed red rocket with white cum droplets mixed in with the leaking stream as though it also gave Nils such arousal that his precum was pouring out steadily in a constant sexually excited condition.
As Nils stood straight up, his red rocket wolf penis slid out of his foreskin's sheath over three stiff inches from the puckered black flesh of it, exposing its completely tapered shape and new lupine werewolf 9-inch slender length pointing upwards like Trevor's own upright 7-inch long human penis. His programmed changes would allow their feral wolf forms to walk, run, and frolic in upright human posture when they wanted to stand straight up, but it had the unplanned result that slid the red rocket's length out of a now black color foreskin flesh tube Trevor hadn't known would happen. It surely made him more excited though seeing the wolfish penis in its slick tapered hardness. He'd programmed it so Nils grew aroused easily, quickly, even staring at his own erect boner, but Trevor's modifications to his program made improvements to the changes Nils' physique were actually receiving and still receiving as those spiky blonde hairs on his flesh were made into the faint oily pelt it was creating across his body.
That's when Trevor's sense of smell was bombarded with Nils' increased stronger musky odors as well, and he swelled an even stiffer erection as the jock's increased body odor turned him on much more than he knew or thought his lust for Nils' jock smell could arouse him. Now he imagined himself lapping the dirty jock's armpits and sweaty groin's pubic hairs like some new craved fantasy formed in his head, bathing the jock's body with his tongue's hungry licks and ... oh shit! That's Nils' own new gay fantasies, Trevor's mind surged at the idea his own programming had made so he'd gain Nils' same altered gay thoughts and pleasures. Nils now craved having his gay boyfriend lapping sweat from his dirty sweaty armpits and pubes, so now Trevor's need to do just that was part of his own fantasies to obey the jock's desires and gay sex hungers and demands without resisting every one he'd imagined and wanted himself.
Nils, now freed from the invisible vault restraints to keep him pinned up against the wall, allowed him to approach Trevor closer. And as Nils' stare focused on Trevor's upright boner, drool began pouring from his lips as his mouth had slowly opened as it gained werewolf fangs much longer than Trevor had programmed to be created as teeth changed into viciously sharpened curved wolf fangs. As Nils' longer tongue slid out from his heavily drooling mouth, Nils' wolfishly forming pointed ears were extending up between those silky blonde strands on his head as each tip made an awfully loud snapping cartilage crunching noise as both ears grew into longer triangular werewolf ears. Trevor had not planned or included that change either, although he'd known he left details out so his program made the correct changes as he'd discovered his C-based program made some logical alterations and changes as was required for living human-turned-creations to fully function with its new werewolf-human lifeform.
But Nils' longer fangs were certain to hurt when they'd bite into flesh, probably tearing away larger chunks of any human or teenager's human flesh or bones when and if they were hungry enough to feast on a human's flesh. He coded in his feral werewolf breed would eat the meat from regular wild animals they hunted down in the wilderness, rather than attacking human's, unless they were turning them into a werewolf. He also added blood sucking to his werewolf creation as a feeding twist with a vampire-like desire drinking any creature's blood it wanted to feast from.
And at that moment, Trevor saw Nils' fingernails were changed into black claws now, too, his thumb and big toe even pulling backwards and up from the other appendages formed differently than those clawed digits, becoming far closer and similar with the wolfish beast he was obviously becoming more feral wolf-like than that human-werewolf creature he'd imagined. Trevor had programmed in a very normal human physique with his code, not a full real wolf.
That error in his program wasn't correcting itself as Trevor imagined it would. He'd programmed the code to retain a mostly human-shaped werewolf, not a wolf body and lupine physique. Except Nils' body sort of had the wolf body's and natural form below his neck with its near unchanged human skull and face unaltered totally, other than both the wolfish pointed ears that had developed. Fortunately, Nils' arms and legs had not changed into a wolf's shortened, thinner appendages. They'd retained all of their human shapes, other than the black claws every finger and toe had formed on them. His abdomen was made more firm and more muscular with its wolf changes, but Nils' upper human form was preserved with most of a human physique rather than some hybrid human wolf. The inclusion of that spiky blonde pelt was actually an erotic arousing additional change Trevor truly admired though, and Nils' increased body odor's smell and sharp sweet muskiness made Trevor's boner leak with precum as the jock drew closer, lapping his drooling, and parted lips as wolf fangs spilled rivers of spit from their pointy barbs with obvious hungered gay arousal.
The jock's lust exposed his dark red rocket's boner dripping with fluid and thick ropes of cum from its pointed tip in full arousing gay excitement of his new sexual hungers and cravings. Long gobs of it were dangling down from an upturned thick erection as its curved length lifted and flexed with his arousal, and Trevor was struggling with his own boner's hardness to not blast his own climaxing ejaculations when Nils reached out and slipped his clawed hands under his arms and lifted him up off the floor and pulled him closer.
"Gonna fuck your ass so deeply, Trevor," Nils growled, and licked his fangs and lips. Cum dripped onto the floor's surface beneath his cock's flexing red rocket's tip. "So fuckin' deep I'm gonna fill your hole with enough cum and slick Swedish dick you're gonna feel it squirting up inside you with each throbbing flex and pump it's spewing into your guts, Trevor. And when I'm doing that, you horny sex beast, you're gonna learn what I like my boyfriend doing for me to prove he loves me and wants me, tasting every inch of me I want you to taste and suckle at, Trevor. Once I've fucked your ass, you'll change like me, and I'll be your lover and mate forever, and you'll be mine."
Nils' clawed black fingernails almost tore his flesh when he placed Trevor back on the floor, his hands still under his arms and restraining him from fleeing.
"Do it now, Nils!" Trevor said, excited Nils' thoughts were the same forceful demanding bully-like jock teenager he hoped his mate would continue to be once he was gay. Trevor feared Nils' dominating cruelty as badly as he desired the blonde jock's perfect physique. "Force me to do what you wanted me doing, Nils, but don't bite me too hard, or suck my blood too soon! You wanna make me feel horny as you as we become gay boyfriend's, right? I--"
Nils shook Trevor's body to silence the nerd and interrupt him. "I'll do what I've wanted to do with your gay ass, Trevor, making you what I am, and give you what I've wanted you to do willingly, with no holes off limits or barred and outta bounds like in my wrestling matches, Trevor. Then you're even gonna know if I'm as gay as you after what you've done to make me become your gay boyfriend. I'm still me inside my own head, I know. And I'm gonna force you to do some extremely abusive sex things you're mind never could've imagined this gay jock werewolf now craves doing with his gay mate and fucking horny as fuck gay mate. See, I've had some sick fuckin' ideas buried way deep inside my head, Trevor, and whatever you did that turned me into this gay werewolf also switched any straight sex ideas to share with someone else willing, and aroused as they've made me. You're about to feel and even share my first one, Trevor, and if the thoughts you shared inside my brain are correct, you made my fantasies your own fantasy to crave the mirror image of, or a reversed sexual role of, your own fantasies that are inside my head."
Trevor thought he should want to escape the jock's grip on him, but he'd included that very same reversal idea into his program's code so they'd want to surrender to and mirror each other's sexual pleasures. Trevor's fantasy to be fucked by Nils would be mirrored in Nils to want to fuck, and he replicated it so Nils wanted to get fucked just as much as Trevor's mind craved it. Including Nils' own fantasies and sexual desires with that same reversed opposite greed to satisfy his own sexual cravings would change them into perfect mating partners sharing one another's likes about every sexual act they'd now experience. Nils' werewolf brain had even improved it somehow, despite his feral nature's reduced intelligence, knowledge, and Trevor's alpha control he'd thought he included into his program.
"Since you crave gay fucking, Trevor," Nils said, believing Trevor's alteration chamber somehow wouldn't end any of his sex act's painful or pleasurable sensations being created by either. He hoped Trevor had beefed up his own gay libido more like the frenzied arousal Nils was feeling that clearly increased his strength into the celestial. "We both want this, so let's start with this gay sex fucking part, first, Trevor. I'm gonna fuck your ass so deep your ass muscles might not stretch out fast enough once my knotted wolf boner's stuck up inside your intestines. But it will after I let my bowels loose and empty its contents in your guts, Trevor. By then, you should feel it flooding inside your own inflating bladder, or maybe wherever else it has to go. And I'm sure the next part will bloat your bladder if my piss doesn't when our lips are sealed in a kiss and the drool you feed on fills your own stomach."
"Oh fuck, WAIT!" Trevor screamed, glancing down when Nils' black clawed fingers grasped tighter around his armpits. He'd never thought or imagined being urinated into by his gay jock boyfriend. "You aren't gonna piss inside my own converted body, are you? Why would you even imagine something as sick as ... oh shit! Wolves, and werewolves mark their territories, and even their mate's with their urine! That's their own scents they'll share, isn't it?"
"And the scents each both secrete is shared like the odors they both have exchanged and gain from each other," Nils added, and pulled Trevor's body even closer as his red rocket swelled from the slick depth of his oily sheath's new slippery lined interior. His erect boner was clearly even longer after it'd become more tapered and thinner. "You know my red rocket's about 9-inches now, Trevor. Look! The knots wrapped around its base grew thick and bulged as my shaft had been originally in that thick human 4-inch shaft it once was. But now that my mushroom's head and fat thickness were replaced by the lengthier tapering length of a werewolf's, Trevor, you may sprout an 11 or 12-incher once yours changes into it's own upcurved red rocket werewolf sized boner like mine."
"I can fix this, Nils," Trevor lied, thinking of some way to stop the jock forcing this same change on him. "I can turn you back normal again. I'll even make you straight again! Please? Just lemme loose and I can write new code to make you revert fully human! I fucked up! You weren't gay before, and I'll correct your brain to change you to your old self! Just lemme go and I'll fix this error I made in my programming code!"