Full Moon Sin: Erotic Werewolf Mating

Chapter 4

ALPHA FORBIDDEN SISTER INLAW 4

Kelvin stood there, eyes blazing with alpha fury and renewed rut as he took in the scene: Melvin between her sister’s spread thighs, fingers wet with Lila’s release, the air thick with the scent of two omegas in heat and fresh s*x.

“What the f**k is going on here?” His voice was a dangerous growl, c**k already straining against his pants at the sight.

Melvin jerked back, heart slamming against her ribs, her fingers still glistening with Lila’s sweet slick. “Kelvin—wait wait wait wait, it’s not—” But the words died in her throat as heat flooded her face. Lila whimpered softly on the cot, legs still parted, her freshly healed thigh and flushed p***y on full display. The younger omega’s eyes were wide with a mix of shock, lingering pleasure, and shy curiosity.

Kelvin’s nostrils flared, inhaling the thick, intoxicating cocktail of scents, Melvin’s healer magic mixed with his own dried c*m on her thighs, Lila’s fresh orgasm, and the heavy moon-driven rut rolling off him.

His golden eyes darkened, the fury melting into raw, possessive hunger. He kicked the door shut behind him with a heavy thud and slid the bolt home. “Don’t stop on my account, little healer,” he rumbled, voice low and velvet-rough. “Looks like the moon decided our pack needs some… healing tonight.”

He stalked forward, shedding his shirt in one fluid motion, revealing the carved muscle of his chest still faintly marked from earlier battle and Melvin’s magic. His massive c**k tented his pants obscenely, the knot at the base already beginning to swell. Lila let out a cute, nervous giggle, covering her mouth even as her thighs trembled. “Kelvin… you’re not mad? Melvin was just helping me with the pain…you know”

Melvin swallowed hard, torn between guilt and the throbbing ache between her legs. “The wound was so close… I couldn’t stop myself. The moon—”

Kelvin dropped to his knees beside the cot, one big hand cupping Melvin’s chin while the other gently stroked Lila’s soft inner thigh, right beside the faint new scar. “Shh, both of you. No more hiding.”

He leaned in and kissed Melvin deeply, claiming her mouth with dominant strokes of his tongue that tasted like rut and possession. When he pulled back, he turned to Lila and pressed a surprisingly tender kiss to her forehead, then to her lips—soft at first, then deeper, drawing a sweet sigh from the younger omega. “My two beautiful girls. Forbidden and perfect under this moon.”

The tension snapped. Kelvin’s hands moved with confident care, guiding Melvin back down between Lila’s thighs. “Keep going, sweetheart,” he murmured to Melvin, his voice warm despite the alpha growl underneath. “Show your little sister how much you love taking care of her. I want to watch… and join.”

Melvin’s breath hitched, but the pull was too strong. She lowered her headdd, pressing soft, affectionate kisses along Lila’s smooth, shaved p***y lips. “My sweet Lila,” she whispered lovingly. “You’re so pretty and wet for us.” Her tongue flicked out, licking a slow, broad stripe from entrance to c**t, savoring the honey-sweet taste of her sister’s release.

Lila squealed cutely, her hands flying to Melvin’s dark hair, fingers threading through it gently. “Melvin! Oh… that feels even better with him watching…” Her voice was breathy and playful, cheeks adorably pink as she glanced up at Kelvin with trusting eyes.

Kelvin positioned himself behind Melvin, flipping up her shift to bare her ass and dripping p***y. He groaned at the sight—her folds still puffy and leaking his earlier c*m. “Such a good big sister,” he praised, nuzzling his face against her soaked s*x. His hot tongue dragged through her folds, lapping up the messy mix of their fluids with hungry but affectionate strokes. “Mmm… you taste like sin and moonlight, healer. So f*****g cute how you’re still full of me.”

Melvin moaned loudly into Lila’s p***y, the vibration making Lila giggle and squirm. The chain formed beautifully: Melvin licking and sucking her little sister with devoted tenderness, while Kelvin devoured Melvin from behind like a starving wolf. His tongue thrust inside her, curling expertly, while one hand reached around to rub slow circles on her swollen c**t.

The other hand stroked Lila’s breast, pinching her stiff n****e gently, drawing adorable little whimpers from the younger girl.

“You’re both so responsive,” Kelvin murmured against Melvin’s core, the words muffled but warm. He sucked on her c**t with soft, rhythmic pulls—affectionate and teasing—making Melvin’s thighs shake.

“My fierce healer and my sweet little fiancée. The moon chose this so babies we can't fight em .”

Lila’s hips rolled up cutely against Melvin’s mouth, her moans turning into high, playful gasps. “Sister… your tongue is so soft… Kelvin, she’s making me feel all tingly again!” She reached down to stroke Melvin’s cheek lovingly, then tangled her fingers with Kelvin’s on her breast. The three of them moved in sync, a tangle of limbs and affection under the streaming moonlight.

Melvin lost herself in the sweetness of it all. She sucked Lila’s c**t into her mouth, flicking it with her tongue in cute little patterns while sliding two fingers deep inside her sister’s tight heat. Lila clenched around them, gushing more slick with a delighted squeak. Behind her, Kelvin ate her out with increasing fervor, his growls vibrating through her core. He nipped her inner thigh playfully, then soothed the spot with kisses before diving back in.

The cabin filled with wet, obscene sounds mixed with soft giggles and loving whispers. “You taste like honey, Lila,” Melvin praised between licks, kissing her sister’s folds sweetly. “So perfect and tight.”

Kelvin rose up, shedding the rest of his clothes. His thick, veined c**k bobbed heavily, knot swollen and pulsing. He rubbed the fat head along Melvin’s dripping slit. “Watch this, little one,” he told Lila with a wink. “Watch how beautifully your big sister takes her alpha.” With one smooth, powerful thrust, he buried himself to the hilt inside Melvin, making her cry out into Lila’s p***y.

The force pushed Melvin’s face deeper between her sister’s thighs. She moaned and sucked harder, fingers curling to hit Lila’s sweet spot while Kelvin began deep, rolling thrusts. His knot caught at her entrance with every stroke, teasing the lock. Lila’s eyes sparkled with innocent wonder as she watched Kelvin’s powerful body move, muscles flexing, his hands gripping Melvin’s hips possessively yet gently.

“It’s so big… Melvin, you’re taking all of it so well!” Lila cheered cutely, her voice breaking into a moan as Melvin’s tongue danced over her c**t. She played with Melvin’s swinging breasts, tugging her n*****s in experimental, affectionate pinches that made Melvin whimper happily.

Kelvin chuckled warmly, leaning over Melvin’s back to kiss Lila again—deep and claiming, but full of surprising tenderness. “That’s right, sweetheart. Your sister was made for this. Just like you.” His thrusts grew firmer, the wet slap of skin on skin echoing alongside the sisters’ moans. He reached under Melvin to rub her c**t in time with his strokes, while his other hand caressed Lila’s cheek.

Pleasure built in waves. Lila came first again, her cute orgasm crashing through her with trembling thighs and a sweet, shuddering cry. “Melvin… Kelvin… I love this!” Her p***y fluttered around Melvin’s fingers, gushing fresh slick that Melvin eagerly licked up.

The sight pushed Melvin over the edge. She came hard around Kelvin’s thick c**k, walls clamping down rhythmically as stars burst behind her eyes. Kelvin snarled lovingly, slamming deep and popping his knot inside her with a satisfying stretch. Hot, endless jets of c*m flooded her womb once more, swelling her belly slightly as he ground in slow, affectionate circles. “Take every drop, my forbidden omega. Gonna breed you both tonight.”

Locked together, Kelvin gently maneuvered them. He stayed knotted in Melvin but shifted so Lila could slide underneath more comfortably. “Your turn to taste your big sister while she’s full of me,” he encouraged playfully, guiding Lila’s mouth to Melvin’s stretched c**t. Lila obeyed with shy enthusiasm, licking in cute little laps and kisses around where Kelvin’s knot bulged obscenely. Her tongue was tentative at first, then bolder, giggling softly when Melvin moaned.

Melvin returned the favor eagerly, burying her face back in Lila’s p***y, sucking and fingering with loving devotion. The three of them stayed tangled like that—Kelvin rocking his knot gently inside Melvin, Lila licking and kissing where they joined, Melvin devouring her little sister. Hands roamed everywhere: Kelvin stroking hair and squeezing breasts, whispering sweet filthy praises. “My cute omegas… so good for your alpha. Dripping and breeding under the full moon.”

They rode wave after wave of pleasure. Lila came again on Melvin’s tongue with an adorable squeal, and Melvin followed, milking Kelvin’s knot until he spurted even more c*m deep inside her. The moon watched over their sinful, affectionate union, its silver light softening the raw dominance into something strangely beautiful.

Finally, Kelvin’s knot softened. He pulled out slowly, a rush of c*m spilling from Melvin’s well-used p***y onto Lila’s belly below. The sisters collapsed together in a cuddly heap, giggling breathlessly, while Kelvin gathered them both into his strong arms on the wide cot. He pressed gentle kisses to their foreheads, nipping Melvin’s neck possessively and then Lila’s shoulder with equal affection.

“This changes everything,” Melvin whispered, nestled safely between her alpha and her sister, heart full despite the taboo.

Kelvin smiled, golden eyes glowing with satisfaction. “Good. The pack will learn. The moon chose us all three.” Lila snuggled closer with a happy, sleepy sigh, her hand resting on Melvin’s swollen belly. “I feel so full… and loved.”

They stayed like that as the moon began its slow descent, the night promising more wild, forbidden nights ahead primal heat, knotting, breeding, and the sweet bonds that tied them forever.