Chapter 57 The Primal Siren’s Ambush of Lust and the Unstoppable Resonance
Edited by: Kanaa-senpai
”Thank you for your hard work, Kento-sama¹, dear. My ‘estrus’ has arrived, so I’ve come to offer my assistance with the experiment, darling²!” Aerith-jou declared as she swept into the room.
”Ah, yes, thank you. But you seem… oddly normal?”I stammered, completely thrown off. All the other beast-women I’d seen were snorting and restless, but she was merely swaying a little. It made me doubt this was really her ‘estrus’ at all.
”Sniff, sniff. Hmm, that musky female scent… she really is in heat, alright,” Laika the dog beast-woman confirmed, twitching her nose all around Aerith’s form. It seemed she’d had the same doubt as me.
”Oh, is that so? Thanks, Laika.” So, some people just handle the heat with a cool head? Wonders never cease.
”Don’t let your guard down, Kento,” Captain Merluza warned, butting her rugged forehead against my shoulder. “This woman is only pretending to be calm. Beneath all that, between her legs is in a terrible, desperate state.” I thought she looked more like the one in heat, but I decided to heed her warning anyway.
I looked at Aerith-jou again. Her cool gray hair, the crisp, upright wolf ears, the bushy tail, and that aloof atmosphere that screamed, “I hate men!” The predatory look she usually wore had vanished, replaced by a serene, lovely expression.
It was unbelievable that this refined lady was the one who’d been repeatedly seeking out men and was currently soaking her underclothes. I instinctively swallowed. I imagined she flicked her tongue out, licking her lips. Yes… I must be very careful, indeed.
”Er, well, then, for the sake of the research, would you be willing to use the ‘Tremble-Ddo-Buddy’?” I asked, trying to sound professional. “Yes, of course, I would. Please, watch me closely, my dear³… ♡?” Aerith-jou purred, and then slowly, tantalizingly, began to hike up her long skirt.
Gradually, pure white skin was revealed, and I braced myself for the sight of snow-white panties… but there were none. Only more smooth, bare skin.
”Didn’t you wear any underwear…?” I squeaked. “No, I thought that would make things move along much faster, sweetie ⁴!” she replied brightly.
She’s a menace! I nearly yelled, though I knew I wasn’t in a position to judge. Before I could process my shock, she’d whisked the skirt off entirely. I wanted to ask why she bothered rolling it up in the first place, but I worried she’d just coo, “To tempt you, of course!” so I held my tongue.
Embracing her sudden nudity, the lady of high society then cast a flirtatious glance my way and shed her blouse. Naturally, she was not wearing a bra. I probably could have seen her through the thin fabric, had I looked closely. I wasn’t sure if I should regret missing it or be relieved I hadn’t.
”How do I look, Kento?”
”Hm?” I replied blankly.
”I don’t think I have a body to be ashamed of. Do I meet with your approval, Kento-sama?” she asked, her eyes gleaming.
”Ah, yes, absolutely. A stunning display…”
”Oh, my… ♡♡♡” she breathed out, delighted.
In truth, it was a beautiful form. Except for the slickness dripping from her intimacy, she looked like she’d stepped right out of a painting. It wasn’t the softness of a hothouse flower, but a lean, powerfully graceful physique, like a wild beast—a body optimized for function and movement. Aerith-jou smiled sweetly and accepted the ‘Tremble-Ddo-Buddy’ from Laika. I was dutifully taking ‘notes,’ but I wondered if this case would even be useful for future research.
”Then, I shall take this, if you please… ♡♡♡” Without any of Laika’s prior preparation, Aerith-jou immediately took the vibrating device deep into her intimate part. When it hit the deepest point, she pressed the switch on the base.
”AWOOOOOOOOOOOH! ♡♡♡♡♡!” Aerith-jou howled a high, joyous bay that echoed through the room. Though she was still smiling gently, that was the sound of climax. It was just like when I recorded Laika’s data. So, her ‘estrus’ was definitely real.
”Agh-OOOH! ♡♡♡! AWOOOOOOH! ♡♡♡!” Aerith-jou continued her primal baying, vigorously working her hand. I kept observing and recorded a second, then a third climax. A blush crept up her cool cheeks, her breathing grew ragged, and her expression became one of pure, unadulterated ecstasy.
Yes, this would definitely be useful for the ‘records.’ But Laika had only howled at the start and later on, mostly growling like an animal during insertion. Was this the difference between a dog beast-woman and a wolf beast-woman?
Just as I was thinking this, a warm, strange wind brushed my cheek, followed by something hot and wet pressing against my neck. “Hooo… ♡♡♡! Hooo… ♡♡♡!”
”Merluza-san! What the-!?” Merluza, her eyes glittering dangerously, was breathing heavily and licking my neck! She looked for all the world like she had truly gone into heat herself!
”AWOOOOOOOOH! ♡♡♡!!!”
”AWOOOOOOOOH! ♡♡♡!!!”
”L-Laika?!” Laika’s howl had joined Aerith-jou’s. Even Merluza, who had just finished her estrus, and now Laika, seemed to have been dragged back into the frenzy! Aerith-jou gazed at me, her eyes back to the predatory gleam of a hunter, and smiled a deeply seductive, dangerous smile.
”It’s bad, Kento, it’s Resonance!” Tania shrieked, running over from where she was cleaning Merluza’s now-soaked trousers. “T-Tania? What is Resonance?!” I panicked. Without hesitation, Tania ignited her magic, trying to cast a binding spell, but…
”Guah! I-I can’t stop them!” Resonance, as I was told later, is when a beast-person is forcibly thrown back into estrus by another’s cycle. It’s usually a way for males to affect females, or vice-versa, and it’s rare between the same gender.
This was a perfect storm: Aerith-jou (Wolf) and Laika (Dog) were both present, and Captain Merluza, fresh out of her own cycle, was there. They all egged each other on, and the ‘Resonance’ took hold.
But at that moment, I knew nothing. Confused by the sudden shift in Merluza and Laika, I tried to flee, but Merluza—whom Laika and Tania together couldn’t stop—was never going to let me go.
”Grrrr-lrlrlrlr! ♡♡♡♡!!!”
”W-Whoa, hey, eeeek!?” Merluza’s eyes blazed, and she tore my clothes right off my body with her bare hands. It tore like something out of a comedy show, ridiculously shredded. She then ravenously licked and consumed the exposed skin of my chest.
”Hup!”
”Lily-sama!”
”Mnyaaaah-ooooooh! ♡♡♡♡♡!!!” Lily plunged the ‘Uterine Massager’ into the base of Merluza’s tail as before. I heard the sound of a gush of wetness coming from the hot body pressing against me. I cheered for my savior, but…
”Gawoooh-woooh! ♡♡♡!!!”
”T-The effect… it’s not weakening at all?!” Unlike before, Merluza did not stop. Whether she had developed a resistance so quickly or was simply too aroused to care, I couldn’t tell. Either way, I was helpless. She seized my shoulders, pushed me down, and pinned me to the floor.
”Gah-Aah! ♡♡♡♡!!!”
”W-Wait, mnhngg!” My lips were aggressively seized. I mean, more than just stolen—I was eaten. She opened her mouth wide like she was devouring me, licking and sucking at my sealed lips. Saliva smeared all over my face, and she brutally tried to twist her tongue past my defenses.
I resisted for a few frantic moments, but when she licked and sucked at my nose, I couldn’t breathe, and my mouth instinctively opened. That was the invitation she needed. Slurping sounds filled the room as she ravaged the inside of my mouth.
”Mh-fwoooh… ♡♡♡♡!” After a long moment of satisfaction, Merluza pulled back, looking down at me with a triumphant expression. The scar on her right eye was nothing—she was simply a beautiful, ravenous, and dangerously seductive predator in that moment.
”Grrr-lrlrlrlr… ♡♡♡♡”
”Grrr-lrlrlrlr… ♡♡♡♡”
As I stared, lost in a daze, two pairs of blazing eyes peeked in from either side of me: Aerith-jou and Laika. Lily and Tania’s distant voices could be heard; they must have been trying to contain the two of them while Merluza was busy with me.
”Ah, Kento, I am sorry. It seems we cannot stop these three on our own…”
”Master, hang in there! We are going to see Miranda-sama now and ask her to make the strongest aphrodisiac and recovery potion possible. Just try not to die until we get back, okay?”
Both of them had already given up and shifted their focus to finding a way to revive me after I’d been squeezed dry. The sound of the back door closing confirmed their retreat. That sound was the signal. The Ambush had begun.
—
Summary:
The testing of the ‘Tremble-Ddo-Buddy’ with the seemingly calm Aerith-jou goes catastrophically wrong. Her climax triggers the ‘Resonance,’ an uncontrollable primal reaction that pulls both Captain Merluza and Laika into an aggressive, consuming estrus. After a failed attempt at restraint by Tania and Lily, Kento is left pinned on the floor, about to be overwhelmed by three powerful, aroused beast-women. It’s a fight for his life—or his vital essence.
—
Character Insight:
Kento’s internal struggle shifts from scientific curiosity to pure survival mode, showing his deep fear of being overpowered. Merluza’s fierce loyalty is twisted into a terrifying, animalistic obsession, proving that her protective nature is easily consumed by primal urges. Aerith’s composed facade completely shattered, revealing a dangerous, manipulative siren.
—
Behind the Scene:
The ‘Resonance’ is a critical world-building element that introduces a new, high-stakes peril for Kento. The abandonment by Lily and Tania, who are focused on ‘resurrection’ rather than ‘rescue,’ highlights the cynical, dark humor and lack of genuine protection in this Isekai world.
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T/L:
¹ My beloved/dear. Very affectionate and intimate tone. ↩ ² A highly seductive and teasing way of saying ‘I have arrived and will help you’. ↩ ³ A formal but highly flirtatious request, putting Kento in the position of observer/judge. ↩ ⁴ A highly suggestive, casual term of endearment that is inappropriate for a noblewoman, highlighting her desire. ↩
Notes:
• Aerith – A wolf beast-person and Ouka’s daughter. She is intensely attracted to Kento’s creative genius and is not shy about showing her interest. Have gray fur hair and tail, wearing elegant dress.
• Kento – The owner of the magic tool shop ‘Harvest,’ which discretely sells adult goods. He’s a former overworked, ordinary salaryman from modern Japan who was suddenly transported (isekai’d) to this fantasy world. He has dark hair and an unremarkable appearance, typically wearing a plain, slightly suspicious-looking shop owner’s clothes looks like Kazuma Satou from certain series. He has a minimal amount of magic power, enough to craft his specialty items.
• Merluza – The Captain of the Royal Guard, a veteran soldier and Lion Beast-person. She testifies to the military necessity and effectiveness of the ‘Tremble Ddo-Buddy’ (which she calls ‘Bob’) for female beast-person soldiers, ensuring job performance isn’t compromised by ‘heat’. Have dull yellow hair, large feline ears, wearing armor, and large scar over the right eye.
• Tania – An Elf adventurer who, despite her race’s reputation for low sex drive, is secretly quite passionate. She initially seemed ‘wasted’ (emotionally dry) to her friend Raika, but was easily introduced to the pleasure-items sold at ‘Harvest.’ She is easily embarrassed and attempts to maintain a dignified facade, despite her recent, frequent purchases. She wears practical but light armor over a simple cloth tunic and short pants, highlighting her grace and agility. Her primary relationship is one of friendly senior-junior with Raika.
• Lily – the sl*ve and primary experiment subject for the magic shop, ‘Harvest.’ She has striking pink hair, Blue eyes, medium breasts, which the Protagonist associates with being ‘wanton’. She has a working knowledge of magic, which she kept hidden from the slave trader.
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Edited by Kanaa-senpai.
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