Harpy's Instinctual Craving
How many times had the waves of passion crashed over us? My mind floated in a haze, my back slick with sweat, and my vision blurred as I dazedly followed the sway of the massive, soft mounds before me.

"Haaah.. hng.. haah.. hah.."
Her skin, glistening with a sheen of sweat, caught the soft bedroom light and radiated pure sensuality. Every time she rocked her hips, grinding down against my pelvis and greedily swallowing and squeezing me, droplets of sweet milk beaded around her areolas and fell with soft plops.
Stirred by the sight, I twitched my hips. She clutched her own breasts as if wringing them out, her body trembling violently. Her sweet milk splattered across my abdomen. Only after registering the sensation did I realize I was already climaxing inside her again.
This was… how many times now? Harpy was… coming again too. …She was so easy to read. Her estrus period was still a little ways off, yet her face was already so lewd and seductive.
"...Harpy…"
Chuuuurp… She pulled me into an embrace. The voice I had meant to call her name with was cut short by the dizzying pleasure of her yanking her hips up and abruptly pulling me free. Glrk… glrk! As if reluctant to let me go, thick semen gushed from her gaping entrance the moment I slipped out. It poured out in heavy spurts. That was… far more than a single climax’s worth. The frothy white fluid streamed down my now-flaccid length in sticky rivulets.
The sight of my spent manhood coated in cloudy liquid was so obscene that, at a glance, it looked as though she had devoured me whole. No… that might actually be the case.
…When had it started? I remembered allowing her to climb on top after my first release. Ah… come to think of it, Harpy had suddenly taken me all the way to the root and then started moving her hips first. And her movements felt far better than I had imagined… That persistent, wet, and thorough rhythm, like she was desperately quenching a parched throat, left me unable to hold out. I had been wrung dry in no time.

"Ung-ssi… It feels… so good… I love you."
"...That’s… me too…"
I had no idea why forming words felt so difficult. I wanted to answer properly without losing composure in front of her…
"Ung-ssi’s face right now… is so… cute…"
"...Harpy?"
What was that supposed to mean…? Cute…? Who? Me…?
"That’s why… this is… all your fault, Ung-ssi. Hnn…"
"...?"
"With hands like these… even when I try to comfort myself on lonely nights, all I can do is rub against the corner of the bed…"
Harpy’s flushed gaze was locked straight on me. She hid nothing of her desire, pouring it all into her expression and voice.
"But that never satisfied me… it only left me wanting more… I’ve been waiting for this… for you…"
"...."
Why had I assumed Harpy would only become lewd during her estrus? I was the one who had awakened her to pleasure… yet I only indulged her when I was the one pent up, never truly considering her needs. After showing her how good it felt, I had barely taken proper care of her since… It must have been unbearably cruel for her, unable to even pleasure herself alone.
"So this trip too… honestly… I was hoping it would turn out like this… Mmm…"
Drip… Slurp. Harpy leaned down with a shy smile, lowered her hips, and dragged her tongue slowly up my length—still messy with semen—from root to tip before taking the head into her mouth and sucking gently. Her eyes were hazy with heat. She clearly wasn’t thinking this through; her body was simply acting on instinct.
"So… I’m really happy. And… I’m sorry…"
"...What could you possibly need to apologize for… hng…?"
She gathered her breasts with both arms and buried my half-hard length—reacting to the earlier lick—deep into that soft, deep valley.
"What we’re doing right now… isn’t for making a baby… It’s definitely… something bad, isn’t it?"
"That’s…?"
"It’s just… to feel good… But why is it… hnn… that thinking that makes me even hotter…?"
Guilt. Had the once-pure Harpy come to understand the thrill of immorality? Though right now her expression was simply one of innocent wonder…
Slide… slap…
"Hah…?"
With me nestled between her breasts, she pressed them together firmly with her arms and lifted then dropped them. Her sweat-and-milk-slick breasts smacked wetly against my pelvis.
Slap, slap, slap…!
"Ah… hng…"
"How is it…? The breasts you always stare at so lewdly… Do they feel good?"
They felt incredible… I had never imagined a paizuri could feel this good. It was so pleasurable I could barely speak. Already hypersensitive from countless climaxes, any further stimulation should have bordered on pain, yet being gently enveloped and slowly rubbed by her warm, soft breasts… this was probably the greatest pleasure one could experience even in this state.
"Hng… hngh?"
Just as I began to feel a strange, not-quite-climax sensation—like something was about to leak out—she squeezed her breasts even tighter around me.
"..Hehe… No."
"...??
The look on her face as she gazed up at me was one I had never seen before. It was filled with deep affection, but also something else… Ah… I didn’t know why, but a fragment of an old record I had once read surfaced in my mind.
Harpy was not an individual name but a species classification. And harpies existed only as females. So how had they survived and reproduced without males? The answer lay in several similar cases of men who had gone missing for nearly a month before being found wrapped in large leaves by the roadside.
It was thanks to those men that harpy reproductive culture became known. Harpies would kidnap human males and take them to their hideouts, then, during the appropriate estrus period, take turns with the males in order of age. The first day they would each receive his seed once, and afterward they would engage in near-orgiastic mating day and night until every harpy was pregnant, never leaving the hideout. They gave the male no rest, feeding him the fresh milk of those who had already conceived, milking him like a stud until he could produce no more seed.
Once finished, they would carefully wrap the unconscious male in leaves and vines and leave him somewhere he could be found by humans.
"..."
I wondered why that memory had suddenly surfaced. Then I looked down at Harpy, who was now aligning her twitching entrance over my once-again erect length, and understood.
Perhaps this harpy species instinctively knew how to wring every last drop from a male, even without being taught.
"You’re not going to let me sleep tonight, are you?"
Glrk…! Glrk…! Even after everything that had already spilled out, the thick, sticky remnants inside her were pushed out with vulgar sounds. My head spun as if I might faint, but collapsing now would be too pathetic.
"...Of course not… hah!"
"Kyaa?"
When I suddenly sat up after having lain there and let her have her way, she flailed for a moment before wrapping her wings around me. In this tight embrace while still connected, the warmth and affection felt so intense that my head spun once more.
"Harpy…"
Comforted by the familiar, gentle softness of her breasts against my chest, I pulled her close in return.
"Ung-ssi…"
Looking into her eyes as she gazed at me from within the embrace, I could feel so many things—her anticipation of the pleasure to come, and the instinctive desire of a female seeking the security of a strong male.
From that moment on, I stopped thinking of this as mere motion for pleasure. Instead, I treated it as a challenge: to satisfy the female I cared for. Gritting my teeth, I met her gaze with renewed fire.
"Kyaaang…!"
Running my hands down her back and firmly gripping her plump, meaty rear, I elicited an unmistakably feminine cry. …Being called cute wasn’t entirely unpleasant, but on the bed, at least, I had no intention of relinquishing control.
"...Brace yourself, Harpy… You’re the one who provoked me first, after all."
"...!"
‘U-uaaah… His eyes… Ung-ssi’s eyes…’
So no matter what, I would make sure she came hard enough to faint or collapse from exhaustion—before I did. As if sensing my resolve, she trembled pleasantly below, soaking the sheets even further. And that face… it was the very picture of a female in heat.
"Nyehehet…♡"