Chapter 401 Wriggle Ddo-Buddy ④*
Edited by: Kanaa-senpai
The clinical experiment for the “Wriggle Ddo-Buddy” reached its fever pitch. My subjects—Suu, the striking cat-beastman secretary from the Beast-person Association, and Marm, the lovely receptionist from the Adventurer’s Guild—were spread wide before me. The devices were held deep within them.
Calling it “holding” was an understatement. They were sliding the undulating rods in and out, putting on a full-blown exhibition. Finally, the true power of the product was about to be unleashed.
”Is this… is this really okay?!” Marm asked, her voice trembling. “Kento, that grin you’re wearing is making me seriously anxious!”
”It’ll be fine, Marm,” Suu replied, her own voice remarkably steady. “Let’s have a little faith in Kento-san. Given that look on his face, I’m sure things are about to get… ‘incredible’… ♡”
”Wh-why do you sound so excited, Suu-chan?!” Marm cried out.
”Call it a track record of trust,” Suu said with a soft hum. “I honestly don’t know how many times ‘Harvest’ products have taken me to heaven by now… ♡”
”That’s exactly why I’m worried!” Marm whimpered.
”Now, now,” I said, stepping closer. “The more you hesitate, the harder it’ll be to push the button. Let’s time it together. On three… ready?”
”Wait! Hold on—wait!” Marm pleaded.
”Three, two, one!” Suu countered.
”Oh, for heaven’s sake!”
””──!!? ♡♡♡””
Matching their breaths, the two of them clicked the second-stage switch in unison. Inside them, the “Wriggle Ddo-Buddy” units began to thrash. The “mystery rod” core had a specific property: its undulations grew more violent the more pressure it sensed. I’d baked that exact quirk into the final product, creating a “High” setting that pushed the limits of the flesh. Calibrating the casing had been a nightmare, but seeing them now, the struggle was clearly worth it. They were more than satisfied.
”Wha—♡♡♡!? No, this, a-agh ♡♡♡!?”
”O-ohh ♡♡♡!? My stomach, it’s—a-agh ♡♡♡!?”
Maybe I made the “High” setting a little too effective. They were both desperately clutching at their crotches, their hips bucking and spasming uncontrollably. The sensation of a mechanical object running wild inside, relentlessly hammering every sensitive nerve… as a man, it was hard to even imagine. But looking at them, there was no doubt: it was an overwhelming ecstasy.
”A-ahhh ♡♡♡!? H-hik ♡♡♡! Vuvu-vuu-uu-uuu… ♡♡♡!? ♡♡♡!?”
”N-nghh… ♡♡♡!? Kyu ♡♡♡!? H-hiiiiii ♡♡♡!? ♡♡!?”
They could have stopped it by hitting the switch again, but neither made a move. Perhaps the sheer intensity had simply wiped the instructions from their minds. They kicked their legs out, thrusting their waists high into the air. Their tensed thighs were shaking violently.
Naturally, this posture put them on full display. Although I couldn’t see what was happening in the depths, the way the soft tissue was being visibly reshaped by the internal motion told its own story.
””──────!! ♡♡♡♡♡!?””
Pushaaa!
Then, as if they’d synchronized their very souls, they hit a massive climax together, spraying a heavy mist of love juice across the bed. I’d been staring so intently that I caught the spray directly… well, I suppose I reaped what I sowed.
With their strength drained and unable to keep their legs open, they slumped down. Their thighs closed, only to be further dominated by the still-wriggling devices. The sensation seemed to change with their legs shut; they curled their backs, writhing in even deeper sensation.
I stripped off my soaked clothes, standing there naked for a moment to fold my things neatly. By the time I turned back, they had lost the ability to even scream. They were just two bodies, twitching side-by-side.
Yeah, I might have created something truly dangerous this time… I’d actually had an idea to combine the “wriggle” effect with the “Bumpy” series, but maybe I should hold off on that. I just hope this doesn’t end in another heresy trial.
I approached the two of them. They were barely breathing, and their skin was shockingly hot to the touch. I felt a sudden urge to wedge myself between them, but I held back for a second.
”Hey, you two doing okay?” I asked quietly.
”Do I look okay ♡♡♡!?” Marm managed to choke out. “H-hiiiiii ♡♡♡!”
”Kento-san… you’ve done it again… ♡♡♡!? Giving us… something this wonderful… ohh… ♡♡♡!”
Ah, good. They were perfectly fine. If things were actually bad, they wouldn’t be able to form coherent sentences. Since the coast was clear, I decided it was time for me to enjoy some of the perks of the experiment.
”Wh-what are you— ♡♡♡!?”
”Well, the experiment isn’t over yet,” I said, hovering over her. “I need to see what happens when I stimulate other areas while the device is doing its thing.”
”No—impossible ♡♡♡! I can’t take any more! Ah, aahhh ♡♡♡!?”
I started with Marm, targeting her breasts. I ran my hands over her heated, sweat-slicked skin, pinning down her weak attempts at resistance. She was clearly too drowned in pleasure to put up a fight. She tried to guard her chest, but I buried my face between her mounds with ease.
”H-hin ♡♡♡!? No, this—which one am I supposed to— ♡♡♡!?”
I trailed my tongue over her tan skin, savoring the salty taste of her sweat. She was caught between the mechanical undulations in her belly and my manual attention on her chest.
”I-ii ♡♡♡!? ──!! ♡♡♡!?”
Pusha, pushaa!
I couldn’t tell if she’d peaked from her chest or her core, but either way, she climaxed again, leaking even more fluid. There’s a real sense of accomplishment in attacking someone who comes this easily.
”I’m coming—I’m coming ♡♡♡! I’m—aahhh ♡♡♡♡♡!!!”
”Ah, it’s okay to come more.”
”It is not fine! ♡♡♡♡♡!?!”
Pushaaaa!
Ignoring her protests, I took her tensed n**ipss into my mouth, sending her over the edge yet again. Through my palms, I could feel the raw, rhythmic convulsions of the muscles deep beneath her skin. I was just starting to plot my next move when I felt a soft weight press against my side.
”…Nyaa ♡♡♡”
It seemed our resident cat-girl was feeling neglected. I abandoned my plan to wait and let myself be sandwiched between the two of them.
”Good girl, now then, Suu, let’s get you to heaven as many times as it takes, okay?”
”Nyaa… ♡♡♡♡♡”
”I—I said I was done… ♡♡♡!?”
Bathed in the heat of both women, I let my hands roam freely. I alternated between Marm’s tan skin and Suu’s soft curves, sucking on their n**ipss like a very busy, very pampered weatherc**k.
”Nyaaaaa-oooo-ooo! ♡♡♡♡!? ♡♡♡!?”
Bushaaaa!
I happened to tap the base of Suu’s tail while teasing her, and she absolutely erupted. Naturally, my thighs caught the brunt of the spray, but at this stage, who was counting?
Drenched in the chaotic c**ktail of their shared release, the experiment proceeded perfectly. The “Wriggle Ddo-Buddy” was going to be a bestseller.
Eventually, the two of them really did look like they were in a precarious state, so I finally clicked the devices off. I wiped them down and gave them some water, looking after the girls who were now completely immobilized.
”Haa, haa… ♡♡♡ Lily-san… she was really something else, wasn’t she…”
”Eh?”
”…Indeed. I didn’t realize ‘Harvest’ experiments were this… grueling.”
”Ah, so that’s what you meant…”
While breathing through their shoulders, the two uttered such things. Indeed, my love-slave Lily is an amazing woman who accompanied me in even more grueling experiments since the shop first opened.
Still, when I asked them if they had any regrets, they both gave me a resounding “NO,” proving they had plenty of spirit left in them.
”Alright, then. Let’s keep the experiment going. Next, I want to try using it alongside the ‘Uterine Massager,’ and then we’ll test the aphrodisiac combinations…”
””……””
And so, the two of them patiently accompanied the rest of my experiments for the day.
—
Summary:
Kento activates the high-power ‘second-stage’ switch on the Wriggle Ddo-Buddy, causing intense pleasure for Suu and Marm. After the automated devices push them to climax, Kento joins in manually, further overwhelming the two women. Despite the ‘grueling’ nature of the tests, both women express a desire to continue, comparing their experience to Kento’s primary subject, Lily.
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Character Insight:
Suu shows a deep-seated brand loyalty and trust in Kento’s engineering. Marm, while initially anxious, proves to have high physical endurance. Kento’s obsession with ‘experimentation’ overrides his concern for the women’s immediate exhaustion.
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Behind the Scenes:
The author uses the ‘experiment’ framing to justify the escalation of toys and techniques, moving from single-device use to complex ‘all-on-top’ combinations.
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TL Notes:
Notes:
• Marm – The attractive, red-haired, tanned receptionist at the Adventurer’s Guild. She wears a uniform that emphasizes her ‘nice body.’ She is kind and acts like a supportive ‘big sister’ figure to Kento. Looks like Mirajane Strauss from certain series.
• Suu – Secretary for the Royal Capital Beast-person Mutual Aid Association and a cat beast-person. Sample No. 19 in Kento’s report. She steps up as the first witness for the defense. Wears glasses and a tight suit.
• 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.
• 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.
Thanks for reading.
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