Frenzy
For readers who chose to skip to this chapter and get past the human phase, here is a quick summary of the story so far:
Cass started as an ordinary human secretly obsessed with anthro wolves. After getting caught masturbating to wolf porn by his tall, black-furred roommate Roan, their relationship quickly ignited into intense, passionate sex. What began as a hidden roommate fling soon evolved into something deeper when Cass was introduced to Roan’s pack — the playful red fox Kiran and the massive scarred wolf Zariel.
As their bond grew, Cass was pulled into a dangerous hidden world of anthro resistance, violent panther militants, and deadly secrets. After a brutal attack left him badly wounded, Cass made a life-changing decision: he no longer wanted to be the fragile human liability in Roan’s life. On the night of the full moon, with Roan knotted deep inside him, Cass underwent the ancient transformation ritual using a rare Void Tear.
Now, Cass is no longer human. He has become a sleek, powerful black wolf with a striking bluish-purple shimmer in his fur — stronger, faster, and finally able to stand beside his Alpha as an equal. But the night is young, the moon is full, and the new wolf is burning with overwhelming instincts… and an insatiable hunger.
Cass’s powerful new black shoulders rose and fell with heavy, panting breaths. The moonlight caught every shift of his sleek midnight fur, making that strange bluish-purple shimmer ripple across his body, sliding along the sleek fur strands and tufts. His ears were pinned flat, lips peeled back from sharp fangs in a low, continuous snarl that vibrated deep in his chest.
Kiran stood a few yards away, completely naked, his red fur glowing softly in the silver light, amber eyes wide with a mix of excitement and nerves. His slim cock was already half-hard, twitching against his white belly fur. "Take me, big boy, I know you're pent up and..."
Cass didn’t speak. He simply dropped to all fours and launched.
The distance disappeared in one explosive leap. He crashed into Kiran with bruising force, slamming the lighter fox back against the thick trunk of an ancient pine. The tree groaned under the impact. Cass’s paw shot up, claws pricking the soft fur of Kiran’s throat as he pinned him there, muzzle inches from the fox’s face.
Kiran’s ears flattened. “Cass, easy, take it ea...”
Cass cut him off with a deep, hungry growl. His broad, flat tongue dragged slowly up the side of Kiran’s neck, tasting warm fur, salt, and that sharp, sweet fox musk that made his new nose flare. He licked again, slower, savoring the way Kiran’s pulse hammered under his tongue. Kiran squirmed under the powerful frenzy enhanced grip. Cass moved on instinct, grinding the swelling bulge of his sheath against Kiran’s belly, already leaking hot precum that smeared across red fur.
The scent of Kiran’s growing arousal hit him like a drug, thick, musky, slightly sweet. It made his new cock throb hard inside its sheath, begging to slide free.
Only growls, no Cass in there at the moment. And he had the little fox vulnerable and helpless.
For once Kiran had nothing clever to say.
Earlier that evening — Pack house balcony:
Roan leaned against the railing, golden eyes fixed on the dark woods. “A newly turned wolf goes into a sex frenzy,” he said quietly. “The first few hours… they’ll want to fuck anything warm and willing. Hard. No control. It’s pure instinct.”
Kiran’s tail flicked with interest, a wicked grin spreading across his muzzle. “That sounds fucking hot. Let me be his first. I can take him.”
Roan gave him a long, serious look. “It might be too much, Kiran. He’ll be in a berserk state. I should be the one.”
Kiran scoffed, ears flicking. “You? Bottoming? Please. We both know that’s not your style, Alpha.”
Back in the clearing:
The pine behind Kiran gave a loud, splintering crack. The trunk snapped. They tumbled to the forest floor in a tangle of limbs and leaves. Cass landed on top, his thick new tail lashing wildly behind him, already scrambling and growling to get a hold on Kiran and line him up.
Kiran’s eyes widened with real fear. “Roan!” he yelped, voice cracking. “Alpha!”
Cass was already yanking Kiran’s sleek thighs apart with rough paws, spreading him open. His brand-new cock had fully emerged from its midnight sheath, a striking, deep red length, heavily veined, glistening with natural slick. It throbbed angrily in the cool night air, the tip already dripping.
Roan charged in fast.
He slammed into Cass from the side, powerful arms wrapping around the new wolf’s chest and hauling him backward with a grunt of effort. Cass snarled and twisted, jaws snapping, but Roan held firm, using every bit of his supernatural strength to keep his footing in the dirt.
“Here, boy,” Roan growled, voice low and commanding as he released Cass and took two deliberate steps back. “You’re dealing with me tonight. C’mon.”
Cass’s amber eyes, now flecked with that strange purple glint, flashed with feral hunger. He charged again.
This time when he crashed into Roan, the bigger wolf actually slid backward several feet through the leaves before planting himself. Cass’s jaws snapped down hard on Roan’s shoulder, teeth sinking in deep enough to draw hot blood.
Meanwhile, Kiran scrambled up, breathing hard, and looked toward the three silent elder wolves watching from the edge of the clearing.
“Is… is this okay?” he asked, voice shaky.
One elder gave a slow nod. “It is natural. The new pup has a lot to get out of his system.”
Roan exhaled shakily, blood trickling down his chest from the bite. “It’s fine. Let him go. Do it, pup. Give it all to me.”
Cass roared and powered Roan down onto the forest floor, leaves crunching beneath their combined weight. His new red cock, thick, veiny, and dripping, found Roan’s hole almost immediately. There was almost no foreplay.
He thrust in hard, burying half his length in one desperate, savage shove. Roan's back and ass skidded across the dirt several inches.
Roan’s breath punched out of him in a rough grunt. His eyes squeezed shut for a second as the burning stretch hit him. “Fuck… easy, pup,” he hissed through clenched teeth, one paw gripping the back of Cass’s neck. “You’re… thick. Ahh… fuck babe. That's my boy, get in there...”
Roan was clearly wincing from the pain of his first time being penetrated, especially since it was from a feral frenzied wolf. But for Cass, he thought he could do anything, including taking this.
Kiran, still catching his breath nearby, called out with shaky humor, “It gets more pleasurable after a while, Alpha. Hang in there. Breathe through the stretch!”
“Thanks so much, Kiran,” Roan growled sarcastically, voice tight with strain as another inch sank deeper.
Cass didn’t slow. He fucked Roan with wild, frantic snaps of his hips, the wet slap of fur on fur echoing through the moonlit clearing. The tight heat around his new cock was overwhelming, silky, clenching, incredibly hot. Every thrust sent sparks racing up his spine and made his heavy new balls slap against Roan’s ass with a lewd sound. His cock was slick and dripped wet down Roan's taint. The new knot was beginning to swell already, and the shaft throbbed, veins engorging. Fifteen days and a new transformation, nothing mattered to Cass now except the release.
Roan took it, breathing through the initial burn, feeling his body slowly adjust and open around the thick length. He looked up at Cass, at the sleek black fur with its impossible bluish-purple shimmer, hard to catch with the eye straight on even an inch away, at the powerful new shoulders and the raw, feral hunger in those amber-purple eyes, and something deep and warm swelled in his chest.
“Look at you…” Roan murmured, voice rough with a mix of pain and growing pleasure. “My beautiful wolf… fuck, you feel so good inside me. So hot… so fucking hard…”
Cass answered with a broken snarl, hips stuttering harder, lost in the overwhelming sensation of his brand-new cock dragging along Roan's tight walls, the head punching deep with every thrust.
One powerful midnight black wolf ass rose, fell, lush tail swaying. Each drop sank that red cock into Roan, stuffing his virgin hole, the slick and precum warming him on the inside and the friction soothing soon into a smooth, hot glide. Each pump made Roan feel something he never felt, full in a way that was more than just physical.
Roan stared at his pups new face, his gorgeous muzzle, his gritted sharp teeth, white as ivory. Roan stretched his thighs wider, finally fully submitting, and Cass growled, taking the inventation to pump those hips harder. The wolf's cock found new depths inside Roan, and he began to feel a little tingle of nerves radiating from his prostate. Roan's cock emerged against his will, thickening with blood, bouncing on his belly. He truly was submitting to another male, first time in his life.
When Cass finally came, it hit like a storm breaking. He arched his back and howled.
The first powerful spurt made his whole body lock up. His knot swelled fast, slamming inside Roan and making the Alpha gasp, a vulnerability that nobody has ever seen from the big wolf. Cass’s eyes flew wide, muzzle open in a silent cry as the orgasm crashed through him in heavy, endless waves.
Roan came as well, spurts rapidly firing across his abs. He felt Cass' new cock widen with the orgasmic contractions, and Roan's vision sparkled a little as the feral dick pulsated against his prostate.
Cass' amber eyes shot open and his body slacked even though it still shook. His muzzle contorted in worry.
“Wh..what the fuck?!” he gasped, voice cracking between violent shudders. “Alpha… I’m in you?! I’m....oh fuck, I’m cumming inside you! I'm sorry, I'm sorry!”
He tried to pull back in sudden panic, but the thick knot held firm, pulsing hard.
“Don’t apologize,” Roan growled, pulling Cass down hard against his chest, strong arms wrapping tight around his new wolf. Hot, thick cum kept pumping deep inside him, far more volume than Cass had ever produced as a human. “Let it all out, pup. Fill your Alpha. You’ve earned this, babe. You’re so fucking beautiful like this… you're my wolf now. Strong, sexy, all mine. You're truly pack, now.”
Kiran whistled low, crouching down for a better view. “Holy shit… look at how much he’s pumping into you, Alpha. It’s spilling out everywhere around your knot.”
One of the elders nodded solemnly. “The fifteen-day load has been transformed. Wolf seed carries far greater volume.”
Cass buried his muzzle against Roan’s bitten shoulder, teeth gritted, growling and whimpering through the long, rolling orgasm. His new knot throbbed hard with every pulse, each one sending another thick rope deep into Roan while warm cum leaked steadily from Roan's stretched hole.
Kiran whistles, "Nice ass, Cass. Damn." The fox bends down for a better look. "And your hole looks tighter than when you were human. Haha, Alpha you're gonna have to break him in again."
Roan caresses Cass, ignoring Kiran's jokes.
"What's it feel like, babe."
Cass says it feels amazing, it feels like there's fingers inside what he assumes is his knot, moving in stroking circles, and tightening with each pump. Now the cum is running out slow and consistent while they are locked.
"That's what I love," Roan said, "Now you know what it feels like when I fill my good pup.
Kiran chirps in "And Alpha knows what it feels like to get knotted in the dirt!"
Twenty minutes later, the knot finally began to shrink.
Cass looked down between them, still panting. “I think… it’s going down…”
With a wet, slick sound, his cock slid free. The striking red length glistened with cum, still half-hard, the knot slowly deflating at the base. It was beautiful, deep crimson, heavily veined, perfectly shaped.
Cass stared at it, eyes wide with awe, then looked back at Roan.
Roan reached up, gently cupping Cass’s new muzzle. “Look at it, pup. That’s yours now. That’s your cock. You’re a wolf, blood and bone.”
Cass’s ears folded back. His eyes shimmered with sudden tears. He collapsed forward, burying his face in the thick fur of Roan’s neck and hugging him desperately tight.
“I’m sorry… thank you, Alpha. For everything.”
Roan just held him closer, one paw stroking slowly down his sleek black fur. “Shh. No sorry. You did perfect, pup.”
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