Chapter 61 The Tremble-D✱✱do-Buddy Trial Awaits꞉ A Scientific Inquiry into Sinful Pleasure
Edited by: Kanaa-senpai
Sister Amelia, whom I hadn’t seen at the shop for what felt like ages, dropped a bombshell after running through the events of the last month. “So, in short, Kento-san, you’ll be attending the ‘Ddo-Buddy Trial’.”
”Yeah, I’m ready for it. Thanks for all the hard work, but, uh… are you sure about the name of the trial?” I asked, scratching my chin.
”Clarity is the most important thing in life,” Amelia replied, her voice firm. “I believe the name perfectly captures the purpose of this hearing—to determine the dangers of the ‘Tremble-Ddo-Buddy.’ It’s succinct and to the point.”
”If you say so…” I muttered.
Apparently, it was going to be a grand, large-scale trial, dragging in celebrities and bigwigs from all sorts of circles. But if they thought it was fine, then it was fine by me.
We had a whole squad of allies: Queen Cecile herself, Chromans (the chairman of the “Beast-person Association”), Ouka-dono from the Garou Merchant Guild, Badatt-dono representing the human merchant guilds from the Tasogare Merchant Guild, Urgate-dono (the Adventurers Guild Master), and Archbishop Trantestar of Canarias.
The real trouble was the “Inquisitors” set to appear as the judge and prosecutors…
”Say, about this ‘Inquisition’ business…” I started, a little unnerved.
”Oh, please don’t let it trouble you too much,” Amelia assured me, shrugging off my worry with a cheerful wave of her hand. “They say that in the old, bad days, being branded a ‘heretic’ meant getting burned at the stake, but those dark practices have been done away with. After all, even ‘magic users’ were once labeled ‘heretics’ back then.”
Seeing how spooked I looked, Amelia made light of the situation. I had heard the stories, but it really struck me that there was a time when just using “magic” could get you killed. Thank the heavens I didn’t get teleported to that era!
Speaking of the old days, Tania, the adventurer elf, was a magic user who lived during the peak of the ‘Witch Hunt.’ It made me wonder if she’d managed to survive by cleverly staying hidden. It felt like a wild story waiting to tumble out, and I made a mental note to ask her about it sometime soon.
”Anyway, Kento-san, the real problem is how we’re going to convince these ‘Inquisitors.’ I heard you were conducting verification experiments with the ‘Beast-person Association.’ Is that going well?” she pressed, refocusing the conversation.
”Yeah, I am. I think I’ve got it mostly figured out like this, check it out…”
”Let me see,” she said, reaching for the papers.
Amelia began to read what I liked to call the culmination of my blood, sweat, tears, and—yes—semen: my thesis. I originally started it as a simple report for the Queen, but after showing it to Muse-san, she convinced me to write it up as a proper, official paper to be presented somewhere ‘appropriate.’
I still had a few more samples to collect, so the data would grow, but the core conclusions and chapter structure were pretty much set in stone. I’d unexpectedly gathered data on the ‘resonance’ phenomenon, and for Laika and Merluza, I even had a comparison between the “Tremble-Ddo-Buddy” and the “Live Ddo-Buddy.” I needed to compile all that, but I should definitely have it ready before the ‘Trial.’
”So, what do you think? Can we use this to convince the church bigwigs?”
”… ‘Usable’ doesn’t even begin to cover it. I’ve never read a thesis structured like this before. While it’s hard to make a direct comparison, given the subject matter, it’s far easier to understand than the writings of seminary professors or the Church’s own relic masters. The prose is stripped of all fluff, a style that only follows logic. Though, I imagine some might find the lack of ‘flair’ to be a drawback…”
In this world, academic papers are often expected to be entertaining reads. A thesis on the discovery of a new magic, for example, might include the author’s inspiration, the joy of the breakthrough, the hardship of refinement, and even their hobbies or struggles during their apprenticeship.
Many magic users and magic toolmakers value this ‘flair,’ sometimes complimenting a paper for its ‘playfulness’ or dismissing one for having ‘flair’ but no substance.
This tradition likely stems from the era when magic users were persecuted, and their grimoires were often disguised as essays, diaries, or travelogues. Reading some of the more preachy papers can even make you feel like you’ve been taken on as an apprentice by the author. It’s a style that harks back to the old, pre-academy master-apprentice system of magic users.
In any case, I deliberately ignored those customs, writing my paper in the style of a scientific journal from my previous world. I was mostly too embarrassed to add ‘flair,’ but more importantly, it started as a report. I really didn’t want to make the already-exhausted Queen read about my personal struggles.
”If I had to offer a criticism, I’d say there’s a lack of data on the human population. With just this content, we might win the right for the Beast-persons to use it, but general public sales might still be banned…”
”Oh, I’m planning to write a separate paper for that. I haven’t gathered enough data yet because it’s an actual survey…”
”A survey? That’s an unfamiliar term.”
”Hmm, you know what, it’s easier if I just show you.”
I handed the baffled Amelia a copy of the questionnaire I was using. I wasn’t sure how much the questionnaire method would be accepted in this world, but I figured doing something was better than nothing, so I’d been running it for a while.
My subjects were customers who had already bought a “Tremble-Ddo-Buddy,” or the clients of the Tasogare Merchant Guild who had purchased or been gifted one. While getting samples was harder than for the first paper, which had the “Beast-person Association” as a partner, people were surprisingly cooperative, all for the sake of the “Tremble-Ddo-Buddy.”
More importantly, this method had a special, private pleasure—a researcher’s privilege—that I thoroughly enjoyed.
”U-um, Kento-san, is it… is it really necessary for me to answer this?” Sister Amelia stuttered, her face immediately turning bright red. I glanced over and saw her hand was hovering over the very first question after the basic info like age and marital status: “Frequency of ‘Tremble-Ddo-Buddy’ use.”
”Of course! It’s an essential question! It’s absolutely necessary to determine the dependency tendency of the ‘Tremble-Ddo-Buddy’!” I insisted.
”But, well… this might be an unfavorable answer for the ‘Tremble-Ddo-Buddy’…” she pleaded.
Amelia’s face grew even redder. Kuh! This is what I live for! I usually ask my regulars, but even customers who have gotten over their shyness about ordering will blush when they have to answer this. It’s been my greatest joy lately.
”Even so, it has to be done. This method is useless if people lie. Don’t worry, the numbers will be averaged out for analysis, and any major outliers will be noted as special cases,” I assured her.
”Ugh… V-very well,” she relented.
Reluctantly, with trembling hands, she scribbled down the number “9.” That meant she was using the “Tremble-Ddo-Buddy” nine times a week. It was less than the current maximum value, but still a pretty significant number!
”Ohoho?…” I murmured, savoring the moment. “W-what is it?! I was being honest! I even included the times on Sunday morning and afternoon!” Amelia defended herself desperately, though I wasn’t actually doubting her. Given her outburst, was she perhaps using it on weekday mornings too? Or maybe she was counting two or three nighttime uses as one long session… Well, I could overlook a small margin of error like that.
”Um, am I supposed to answer this one, too…?”
The next question she paused at was: “Sexual intercourse experience (yes/no) and number of partners.” The following question asked for a comparison: “Difference in satisfaction between ‘Tremble-Ddo-Buddy’ and sexual intercourse (if applicable).”
The latter question asked for both a numerical score (“If ‘Tremble-Ddo-Buddy’ satisfaction is 5, what is the score for sexual intercourse on a scale of 0 to 10?”) and a written evaluation.
”Of course! This is the main part of the whole survey!” I exclaimed.
”H-hyuuu…” Amelia whimpered.
Half-sobbing, Amelia wrote “1” and “10.” So, her only experience with sexual intercourse was the one she had with me recently, and thankfully, my ‘Ddo-Buddy’ had received a perfect score!
”Hmmph, interesting…” I leaned in closer. “D-don’t look at it!” she cried out, trying to cover the page. “I can’t not look! I have to read and analyze it thoroughly to make it a proper paper!”
”B-but I know that!” she protested.
Despite her complaints, Amelia dutifully filled in the descriptive field. What did it say? “While the male organ lacks a true vibration function, the warmth and fleshiness, the unpredictable movements, the feeling of superiority from being needed by the one she seeks, and the ecstasy of being sown with seed by the one she desires, all constitute a unique pleasure that cannot be replaced by anything else.”
She also wrote things like, “It’s hard to resist when a big hand massages your chest or strokes your head,” and “I can climax just from a kiss,” and “A low whisper is also quite charming.” In short, it was high praise. Even I felt a little embarrassed, but it was incredibly useful, so I decided I’d read it again in detail later.
Amelia, half in a fit of pique and occasionally glaring at me, kept answering the questions. Legal sexual harassment is truly wonderful. What can I say! Queen ordered it (she did not)! I reverently accepted the questionnaire she had finally finished, taking a good amount of time to complete it.
”I shall treasure this like a family heirloom.”
”P-please don’t…. Anyway, have you decided where you’ll submit the finished thesis?”
”Ah, I think it’ll be the academic society run by the Court Wizards. The timing didn’t quite work out for the Magic Toolmakers Guild, otherwise, that would have been a good fit…”
This was the ‘appropriate place’ Muse-san had mentioned. By the way, regardless of the venue, Queen had ordered the access to be severely restricted. Apparently, this world’s academic societies already have strict confidentiality, and we’d be making it even more stringent.
”So, not the Alchemists Guild, then? I thought you were Master Kogima’s apprentice—he’s renowned as an authority on magical material research, isn’t he?”
”You looked him up?”
”Yes, the Church did some digging. It was a bit of work since you haven’t graduated from any of the academies…”
”I see. Well, I’m basically an unregistered magic toolmaker. Calling me an apprentice is generous; I was more of a half-time errand boy who got a few basic lessons. The old man Kogima never taught me anything about guilds or academic societies either. He probably didn’t think I was the type to invite into his secret circle. Back then, I was more interested in making a quick buck than in research, and honestly, that hasn’t changed much.”
By the way, the difference between an Alchemist and a Magic Toolmaker is like basic research versus applied research. Apparently, many people belong to both guilds, but I’m strictly an applied researcher. Unlike the old man, who was happy just mixing things and seeing the reaction, I only care about how to turn things into a product. In that sense, the Magic Toolmakers Guild would be a better place to submit the paper.
”I understand… Well, if you aren’t particular about the submission venue, perhaps you should consider showing up at the ‘Relic Masters’ gatherings sometime.”
”Huh? Wouldn’t I just get mobbed there?”
The difference between a ‘Relic’ and a ‘Magic Tool’ is that the former uses the ‘Miracles of God’ while the latter uses ‘magic.’ A ‘Relic Master’s’ meeting sounded completely foreign to me.
”Actually, recent research is beginning to show that in ancient times, the line between ‘Relics’ and ‘Magic Tools’ didn’t exist. Mechanisms in ‘Relics’ that couldn’t be explained before are now being revealed to actually use ‘magic’…”
”Huh. But it sounds stuffy, so I think I’ll pass.”
”I-I suppose so… Still, the ‘Tremble-Ddo-Buddy’ barely uses any magic, and considering its purpose, I think it has the potential to be a ‘Relic.’ Just keep that in mind.”
”Yeah, got it.”
I swallowed the obvious tsukkomi² that it was a sex toy, not a holy relic, and nodded. If the ‘Tremble-Ddo-Buddy’ were ever certified as a ‘Relic,’ we’d truly become an erotic cult…
”And, just one more thing, if I may…”
”Mm, what is it?”
”In the survey just now, there was a question about ‘frequency of sexual intercourse’…”
”Ah, that’s to determine the relationship between sexual intercourse frequency and masturbation frequency. If the frequency of sexual intercourse is greater, the frequency of self-pleasure decreases, it would suggest that the ‘Tremble-Ddo-Buddy’ isn’t addictive, right?”
”Y-yes, that’s right. And, so…”
”Yeah?”
”W-what do you think is the best way to increase the frequency of sexual intercourse, Kento-san…?”
”Hmm, now that’s a topic that promises a lot of research, isn’t it?” I replied, grinning at Amelia, who was blushing and fidgeting with her fingers.
—
Summary:
Kento prepares for the grand ‘Ddo-Buddy Trial’ with the help of Sister Amelia and an unlikely coalition. The focus shifts to his highly unconventional, scientific-journal-style thesis, which lacks the expected ‘flair’ of the local academic scene. Kento uses his new survey method on a highly embarrassed Amelia, collecting explicit data on the ‘Tremble-Ddo-Buddy’ use and satisfaction with human partners. This hilariously awkward research yields a ‘perfect score’ for Kento and sets the stage for the trial, as Amelia subtly suggests the product could even be reclassified as a ‘Relic.’ The chapter ends on a suggestive note as Kento eagerly embraces Amelia’s final, personal ‘research question’ about increasing sexual frequency.
—
Character Insight:
Kento is revealed to be a pragmatic applied researcher who views his explicit work with scientific detachment, yet takes private, sadistic pleasure in the embarrassment it causes his subject, Amelia. His main motivation remains the application of knowledge for profit and convenience, not pure discovery. Amelia, despite her religious role and initial shyness, is fiercely loyal to the cause and Kento, even providing deeply personal, high-praise testimonials that immediately turn the professional into the romantic/sexual.
—
Behind the Scene:
This chapter is the final lead-up to the ‘Ddo-Buddy Trial,’ establishing the core arguments (lack of addiction/dependency) and the main piece of evidence (Kento’s thesis, bolstered by the new survey data). The structural discussion of local academic papers serves as a world-building note to justify Kento’s modern, scientific style. The final exchange with Amelia is a direct character callback to their previous interaction, escalating their personal relationship under the guise of ‘research.’
—
T/L:
² tsukkomi: This is a term from Manzai (Japanese double act comedy), referring to the straight man who critiques the boke (funny man). Here, it just means a witty or corrective mental remark. ↩
Notes:
• Amelia – The Sister of the Church of Demon-Subjugating, who usually buys from Kento, has light blue hair.
• 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.
• Chromans – President of the ‘Royal Capital Beast-person Mutual Aid Association’ and the manager of the ‘Grizzly Merchant Guild,’ a top-tier weapons and armor dealer. He’s powerful, influential, and very business-savvy. Have round, cute bear ears (sooty brown), bushy beard and hair (sooty brown), and large build with muscular physique under a expensive gown.
• Badatt – The 7th-generation manager of the long-running Tasogare Merchant Guild. Despite his fat, oily, ugly bastard, have multiple rings appearance, he is a competent and respected manager who listens to his employees. He is a man of ‘good sense’ but is overwhelmed by the explicit nature of Kento’s products and the ensuing chaos.
• Cecile – A high-ranking, powerful woman in the capital who possesses the authority to regulate business and commerce, particularly concerning moral or public order issues. She is currently investigating Kento’s shop, ‘Harvest.’ Have long golden hair, elegant, and wearing expensive white dress with gold accesories.
• Ouka – The middle-aged head of the Garou Merchant Guild, known for leather goods and accessories. He is a prominent figure using his own family’s experience to advocate for the ‘Tremble Ddo-Buddy’. Have gray wolf ears and wear merchant attire.
• 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.
• Muse – Cecile’s trusted attendant and chief maid, Muse handles sensitive, discreet tasks like espionage and product acquisition. Have sharp, black eyes, wearing maid uniform, and have expressionless face.
• 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.
• Laika – The beastwoman dog.
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Edited by Kanaa-senpai.
Thanks for reading.
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