Beastkin are highly susceptible to the phases of the moon. Their physical capabilities and sensory acuity fluctuate markedly at night, and when combined with heightened mental arousal, their abilities can swing by nearly double their baseline. As is well known, they reach peak power during a full moon and become most subdued during a new moon.
By the way, Orcs also react physically to lunar cycles, though not as dramatically as beastkin. This trait isn’t unique to Orcs; it’s shared among races adapted to darkness, including Dwarves and Dark Elves. For them, activity peaks during the new moon. The closer they are to darkness, the stronger they become. Races that lack natural low-light vision find themselves hard-pressed against nocturnal dwellers who exceed their usual capabilities even in normal conditions. This is why night raids by nocturnal soldiers—a tactic mastered by multi-racial Celesta and the southern Dwarf Kingdom of Gort—have long been feared. Neighboring nations have established a standing protocol to reinforce border defenses, especially during new moons.
Now, these characteristics naturally extend to reproductive capacity as well. When individuals from species with subtly opposing traits intermingle, certain troublesome complications arise.
“Brother Kelly, is it already over?”
“H-huh? Come on, you guys need to hold back a bit. I’m not exactly young anymore.”
“If you’re still in your twenties, you can’t use age as an excuse… Did someone else do it?”
“No way! Orcs get worse during full moons!”
Lynne, a wolf-beastkin, lapped at Kelly’s limp member with a wet tongue while Kate and her sister Mikagami watched. Kelly and Isaac puffed out their noses in frustration, utterly overwhelmed by the two sisters’ insatiable desire. “Seriously, even if we’re talking about culture here, having sex every hour from dawn to dusk isn’t sustainable…”
Reluctantly withdrawing from the still-pining pair, they wiped their damp hands with a towel and pulled on their pants and trousers. Left alone, Lynne would continue licking insistently until he became erect again.
“If I were serious about it, I wouldn’t mind staying inserted for an entire day… but…”
“Sister’s being unfair. If that’s the case, I can’t do it.”
“Yes… besides, Kelly has his own life to consider.”
“You two should wear clothes and go out sometimes… come on, spending the whole day waiting in my room for my dick is ridiculous!”
Sister Lynne pulled the sheets aside with a mischievous smile, while younger sister Kate grinned brightly, wagging her tail energetically.
“Because I love Brother Kelly so much.”
“W-well, I’m still not used to… uh, having it inside me. If possible, I’d like a bit more. Especially during full moon periods when my body craves it intensely, so getting accustomed now is crucial.”
“So that’s why… haa…”
Though happy about the affection, he felt they were indulging too much.
Since the night she consummated her union with Kelly, Lynne had rushed back to Queeca and submitted her transfer request. While a normal human would take over a month for the round trip, she made the most of the Desert Great Labyrinth, completing the journey in just ten days.
Even accounting for shortcuts, this demonstrated the astonishing mobility unique to wolf-beastkin.
“I ran nonstop without sleeping because I wanted to see Kelly so badly.”
”…So don’t drag three rock golems along with you!”
Facing multiple rock golems simultaneously hadn’t happened since the Ace Knight trials, but thanks to Lynne’s cooperation, Kelly managed to repel them successfully. At that moment, he realized just how formidable she truly was—living up to her reputation as a promising future officer of the Third Western Infantry Regiment.
Her primary strength lay in martial arts leveraging her powerful legs, yet she was far from clumsy with a blade; she even displayed impressive skill by severing a rock golem’s arm with a seemingly unremarkable longsword.
”…If you gain proper experience there, becoming a Master Knight isn’t out of the question.”
“But right now, I’m already your wife, after all♪”
In a corner of the labyrinth where the five limbs of the rock golem lay scattered, three days ago I had completely ignored both my travel fatigue and the lingering echoes of battle to suddenly pounce on Kelly, begging for erotic reunion.
“Once a few more days pass, we’ll have to return to Basson,” said one.
”…That’s unfortunate,” replied the other.
“We won’t be able to use our… uh… until we get there…”
The two wolf sisters hung their heads in shame.
With a bang, the door swung open.
“Quit the military already!”
“Mom!”
Mother Dorothy immediately flashed her thumb-squeezing sign.
“That’s exactly why it can’t be something you join or leave based on your mood! The military isn’t like that!”
“If we bail out now, won’t they stop calling us? Nobody knows about our colony anyway.”
“But didn’t you host the Captain and Smayson just yesterday?”
“Wouldn’t they understand?”
“On what basis!?”
Mother was fully committed to her grand ambition of welcoming grandchildren. Since Kate and Linne had made their “promise” to marry Kelly, they had become completely obsessed with conception.
“I’d like to work in the military for at least another three years…”
“Three more years in the military…”
“When you return, we’ll have a family of fifteen—me, your sister, and me!”
Wolf beastfolk typically give birth two at a time.
“What should we do? Is there any childcare facility in Basson?”
“There isn’t…”
“Don’t worry, don’t worry—I’ll take care of them myself in town!”
“Oh my. When you’re ready to give birth, just send us a letter; I’ll come help out.”
“Wait, both of you… No, Mom, calm down. Are we really determined to keep giving birth until our limits?”
Kate nodded cheerfully. Linne shyly looked away.
”…W-well… probably… if we don’t think about it at all, we’ll just end up getting pregnant every year… Probably because I can’t stop having sex with Kelly…”
“Right♪”
“Yeah.”
“That’s truly reassuring.”
Even Mother nodded in agreement. ”…No, but…” Kelly felt left behind and slightly at a loss.
From an outsider’s perspective, it would be nothing short of a delightful harem where the sisters happily collaborate on making children. However, when multiple women form a united front, controlling the situation becomes nearly impossible.
Kelly sympathized a bit with Smayson, wondering if she too was experiencing this same feeling of being left out while being favored by Selen and the Captain. In reality, Kelly was simply too timid to speak firmly to the women.
Anyway.
“First of all—”
“Yes.”
At the dinner table, Mother slammed her hand down on the table with a bang, and Kelly flinched.
Kate and Linne were staring up at Dorothy with puzzled expressions, wearing Dorothy’s oversized secondhand shirts—far too big for them, though their own clothes had been soaked through during sex and weren’t fit to wear anymore.
“It’s one thing that women are full of desire, but declaring a ‘dry spell’ just because it’s a full moon? Don’t you think that’s pathetic, Kelly?”
“Well, come on, Mom. You get it too, right?”
“That’s not the point! These wonderful daughters are saying they’ll stretch their vaginas to give birth to your child no matter what—even if it’s your last breath! Even a man needs at least one or two erections when he’s dying, doesn’t he?”
“Mom, this is dinner time. Stop being so vulgar.”
“B-but!”
Bang, bang, bang! Dorothy slammed the table again.
“I got plenty of Hellboar liver; it was a bit pricey, but worth it.”
”…Ugh.”
“Kelly-san?”
“Oh, I—I don’t like organ meats.”
He was the strongest male in the Cow-Ogre colony, yet he had so many food dislikes.
“Noisy.” Dorothy showed no interest in listening.
She plucked out a raw piece of Hellboar liver, grabbed Kelly by the jaw, forced his mouth open, and shoved it inside.
“B-bloooowww!?”
“If you eat fresh raw liver, even a seventy-year-old grandpa can get an erection. It’s an aphrodisiac, Kelly. With this, the two of us—aaah, don’t vomit!”
“I-I just don’t like it, ugh…”
Kelly was on the verge of tears.
But Kate caught the expelled liver in her mouth. Then she tried to feed it back to Kelly mouth-to-mouth. “Oh, hey, Kate!?” Kelly’s eyes filled with even more tears. He could push her away if he wanted to, but doing so would make him the lowest kind of person.
“Mmm… uh…”
“Gugu.”
She eventually made him swallow it.
Then Kate pressed her face against Kelly’s mouth, refusing to let him spit it out. ”…Gheww.” He was forced to swallow.
“I-I can’t believe it. It’s seriously amazing. Super seriously amazing.”
“Here, next one after this.”
“No more, I can’t…”
But before Kelly stood Kate, biting off the next piece of liver, and Linne, mimicking her, trying to pinch and bite into a slice of liver herself.
“Brumoo!!”
He ate it all while crying.
“Gh… ugh… I thought I was going to die…” Kelly rinsed his mouth, weeping softly, looking like an innocent girl being ravaged. Yet even then, changes were occurring within Kelly’s body. “Gh… damn it.” Kelly’s member was growing larger and larger. With that came a rising sexual desire, gradually pressing down on his thoughts. “Gh…” Kelly shook his head. He wanted to cum with Kate and Linne. He wanted them to violate him as he imagined. If this were Kelly from a few weeks ago—a virgin—he might have been able to endure it. But Kelly already knew what it felt like to be inside a woman. He had discovered where his vitality could go. Once that was understood, the heightened lust could only be sublimated through action. Even if reason found satisfaction, instinct would still demand more. “Gh… oh… ooooh…” Slowly rising to his feet, Kelly looked at Kate and Linne, who stood at waist height. Receiving their expectant gazes… He clicked his teeth sharply, exhaled hot breath through his nose, and cried out: ”…N-no, y-y… y-yes, do it!!” With a voice so surprising even he was startled, the last remnants of reason reached out to them.
“Woo♪”
“Ahh… Ke-Kelly-san♪”
Grabbing both of them by their hands, he flipped each upside down, exposing their bare buttocks.
He forced his swollen member, protruding from the waistband of his pants, deep into Linne’s tightly squeezed crotch.
“Haaah… ahg, ahh♪ Kelly-san, Ke-Kelly-san!! More, more!! Rougher… aaaah!!”
Linne panted happily, tongue lolling out, as Kelly roughly spread her small groin and thrust his thick member inside. Linne herself had eaten a bit of liver too, and combined with the full moon’s effect, she was in an intense state of heat. Kelly plunged straight to the depths of her womb. Still, only halfway—his elongated member couldn’t go any further. The Kelly whose reason had vanished pulled out frantically, then slammed Linne’s waist forcefully against his throbbing flesh again and again. It was nothing more than masturbation using Linne’s vagina, disregarding her own wishes entirely—a vaginal-only solo act. Yet, that was exactly the kind of masochistic sex Linne preferred. “Haaah, ahg, ahh♪ Kelly-san, Ke-Kelly-san!! More, more!! Rougher… aaaah!!”
I am completely under the dominion of this fierce, savage man. My current worth is not that of a proud warrior or a righteous wolf-beastman; I am merely a woman, nothing more than a hole designed to rub against his cock. Linne felt an overwhelming ecstasy at being treated thus and bred by him. It was Kelly who satisfied her on the level of beastly instinct, through this cruel sex that Kelly performed while aroused.
“Aaaah, aaah, woof, aaaah… K-Kelly-san, c-cock… I love your cock… I’ll love your cock forever… I’ll become your cock-hole for life!!”
“BUHMOOOOOO!!”
Kelly didn’t listen. The “promise” could not be fulfilled.
If Kelly had affirmed it here, Linne would have abandoned everything—her role as a soldier, her position as a sister—and become a sex slave beyond even the title of wife for the rest of her life. Linne burned so intensely for Kelly, submitted to his essence, and felt love.
“Kelly… there…!!”
And then, disregarding Linne entirely, Kelly ravaged her vagina at will and released a torrential ejaculation deep within her womb.
“Ahh… aaagh♪ Kuah… aaaahh!!”
After this intensely painful yet pleasurable sex that continued fiercely, Linne reached absolute climax, went completely wild from the mercilessly launched seed, and fainted.
Even witnessing Linne’s harrowing state, her sister only sparkled with excitement in her eyes. Already accustomed to Linne’s sexual preferences, Kelly’s immense size, and his savagery, she no longer found anything terrifying. Having spent countless days indulging in sex with Kelly, Kate had evolved into an even more depraved girl than Linne.
“Huuuuh♪” As if the matter were concluded, Kelly withdrew from Linne and thrust himself into Kate. Linne was casually tossed onto the table. After rolling on the tablecloth for a few seconds, she faintly opened her eyes, felt the seed overflowing copiously from between her legs, and offered a faint smile.
Meanwhile, her sister too had become Kelly’s masturbatory tool. “Gahfu, ahfu, aaah, kahfu♪ …K-Keri, Onii-chan, you’re amazing… so good♪” Rhythmically ravaged deep in the vaginal depths, Kate wagged her tail happily. The sex appeared rough and destructive. Indeed, almost all reason had fled; Kate’s own desires were not even considered. Yet, there remained just enough control to avoid breaking her. Despite following his instincts, Kelly still possessed a gentleness that softened his approach toward weaker partners.
That tenderness was utterly endearing, so while held down and unable to move freely, Kate strained to wag her hips desperately, trying in every way to aid Kelly’s pleasure even slightly.
“BUHGOOOOOO!!”
Feeling this, Kelly growled lowly as if enduring overwhelming pleasure.
“It’s okay… Onii-chan Kelly, it’s okay if you cum…♪”
“Huuugooo!!”
A tiny wolf-beastman wagging her hips undulating to encourage the massive bull-ogre’s ejaculation.
Her expression, drenched more in love than lust, and her movements— Ultimately, Kelly’s beastly nature succumbed to them. “BUHMOOOOOOOO!!” Raising a roar like a final gasp, Kelly poured himself abundantly into Kate’s brave vagina.
“Haa… It’s amazing to see it right before my eyes.” Dorothy watched in stunned disbelief. The wolf-beastman sisters had exhausted themselves, collapsed onto the table, and were panting heavily while letting semen drip steadily from their crotches.
And then, his son, still erect with an unyielding member, stood firm… ”……Wait, Kelly? Kelly, wait a minute… I’m not done yet…!!”
Kelly woke up just before dawn.
He couldn’t quite remember where he’d lost consciousness, but even after his rationality fled, memories remained: having ravaged Kate and Linne in the dining room, and then…
Then…
“Hmm?”
As he suddenly sat up, he found three women sprawled around him.
Kate, Linne, and Dorothy.
“Whoa!?”
Dorothy was also completely naked, her thighs spread wide with semen spilling between them.
“What the hell…”
Kelly looked utterly devastated.
“W-wakey wakey, Kelly,” came a voice.
“Mom.”
”……N-no way… my own son just did that to me…”
“I’m sorry, I’m so sorry.”
“Guh… If you’d done it on purpose, I would’ve beaten you to death. But since it’s full moon, you won’t get pregnant anyway.”
Stumbling to her feet, Dorothy draped a cloth over Kate and Linne, offering a slightly gentle smile.
“Still, wouldn’t it be better for their safety if we also took a tough ogre or cow-ogre wife?”
“B-but that’s cruel! Making women take on extra wives just for some purpose!”
“A mother who was ravaged by sheer force isn’t the one to feel sorry for, is she?”
“I’m sorry, I’m so sorry.”
Though Dorothy, a woman in her late twenties with children already, might seem somewhat unreasonable, Kelly thought it best not to press the matter. After all, being labeled an extreme mama’s boy would make life unbearable.
”……But it feels good after such a long time,” she murmured.
“Don’t say things that are hard to answer, Mom.”
“Hahaha. Well, I don’t really mind ogre women anyway.”
“No, I still don’t want that either.”
“Shall we do it again? Just because you were carried away?”
“I’m sorry, I’m so sorry.”
It was dawn for Kelly Isaac, the strongest man in the cow-ogre colony, as yet another reason emerged why he couldn’t defy his mother.