He adjusts his grip, pulls me down as he thrusts up, and the knot finally breaches.
The relief makes me sob. The knot immediately swells larger once inside, triggered by my body heat. I can feel it expanding, growing until extraction becomes impossible. We're locked. Completely. And now the real breeding begins.
His cock pulses, and the first wave of seed floods into me. Hot enough to burn, thick enough to feel every pulse as it travels through his shaft. My cervix, repositioned by the transformation, opens eagerly to receive it. I can feel his seed entering my womb directly, filling spaces that have been empty for so long.
“Being bred,” he states with satisfaction. “Female receiving seed. Body accepting.”
He's right. I can feel my body responding at a cellular level. Some chemical reaction as his genetic material meets my transformed eggs. The burning sensation of successful mating spreads through my abdomen as conception begins immediately.
His tail wraps around my thigh, the tip finding my clit. The vibration against the swollen bundle makes me come again, and my pussy milks his knot through it, drawing more seed from him. He's still releasing, impossible amounts by human standards. I watch my belly begin to swell from the volume, skin stretching to accommodate.
“So much,” I gasp, looking down at my distending stomach.
“Seven days of empty requires complete filling,” he explains, cock pulsing again. “Body needs excess to ensure breeding success.”
His secondary cock emerges fully, its muscular length coiling around my thigh. Without asking, he pushes it against my ass. The tip breaches the tight ring of muscle and slides inside in one smooth motion. The dual penetration makes me scream again, sensation too intense to process as anything but overwhelming need for more.
“Marking all of female,” he says, both cocks releasing simultaneously.
The feeling of being filled in both holes breaks something in my mind. I convulse repeatedly, one orgasm rolling into another as his seed fills me beyond capacity. My belly swells more, visibly distended now, skin tight and shining with sweat and blood.
“Mine,” he growls, teeth grazing my throat. “Bred. Claimed. Mine.”
“Yes,” I sob, past the point of argument. “Yours. Please, yours.”
He bites me then. Teeth breaking skin at my throat, marking me where everyone will see. The pain triggers another orgasm, and I bite him back instinctively, tasting his blood while my pussy milks his knot desperately.
We stay locked for three hours that first time. He holds me against the wall the entire time, not letting me move except as he positions me. Sometimes he shifts angles to make his cock press against different spots. Sometimes he makes his secondary cock thrust in my ass while the breeding cock stays locked. Each movement triggers fresh orgasms until I lose count.
“Twelve,” he informs me after a particularly intense convulsion. “Female has come twelve times.”
“Can't,” I gasp. “No more.”
“More,” he corrects, tail vibrating harder against my clit. “Female body needs to orgasm repeatedly during breeding. Ensures seed reaches everywhere. Ensures offspring.”
The thirteenth orgasm makes me black out briefly. When I come to, we're on the floor, him seated with me in his lap, still locked together. His knot shows no signs of shrinking. If anything, it feels larger.
“How much longer?” I ask weakly.
“Until breeding complete. Until body satisfied.”
His cock pulses again, more seed flooding my already full womb. I can feel it searching for any empty space, filling every possible cavity. My body accepts it all, transforms it, uses it to begin the process of creating offspring.
When his knot finally releases, the flood of seed that escapes makes me sob. So much pours out, running down my thighs in thick streams. But so much remains inside, my belly still swollen with it.
“Empty,” I whimper at the loss of his cock.
“Not for long,” he promises, already hardening again.
This time he puts me on my hands and knees. I try to hold the position but my arms shake too badly. He has to support me, one hand on my hip, another fisted in my hair, holding me up as he pushes back inside.
All nine ridges slide in easier this time, my pussy already shaped to receive him. But the sensitivity is overwhelming. Every ridge triggers fresh sensation, and I come before he's fully seated.
“Good,” he approves. “Female learning to come quickly. More efficient breeding.”
His knot presses against my entrance and I met his rhythm, my hips rising to meet the swelling knot, desperate to be locked. It takes only two thrusts before it pops inside, swelling immediately to trap us together.
“Breed me,” I beg, past shame. “Fill me again. Please.”
