Chapter 31 The Forbidden Tool and the Broken Mother Superior
Edited by: Kanaa-senpai
The following day—the very morning after Kento’s visit to the Tasogare Merchant Guild to stop the sale of the ‘Tremble-D**do-Buddy’ and his chat with Aki about the Beast-person Association on the street—Sister Amelia received the devastating news right there in the convent of the Church of Demon-Subjugation.
”Mother! Mother Marian! What in the world is going on?! They’re—they’re saying you had the ‘Tremble-D**do-Buddy’ pulled from the market…!”
It was the moment she had finally conquered the overwhelming pleasure that the ‘Tremble-D**do-Buddy’ brought, just as she was preparing to seek out her next spiritual trial. It was perfectly understandable why she rushed at Marian in such a flurry.
”Oh, my, my, little kitten…♡ You mustn’t raise your voice in the hallway, dear?” Marian replied, unhurried, fixing Amelia with a heavy, languid gaze as she gently chided her. Marian saw Amelia as her dear student and junior. She knew the earnest girl was upset that her chance for “spiritual discipline” was being snatched away.
”F-Forgive me, Mother…. B-But, still!”
”This isn’t a conversation for out here, is it? Unless you actually want everyone to hear you yelling about a ‘D**do-Buddy,’ that is.”
”…Ah! I-I understand. Then, in that small room over there…”
They moved together, retreating to the little private room. The voluptuous, alluring Mother Marian, a figure of complete, mushy charm, and Amelia, whose face was pure, innocent piety but whose body was bursting with provocative curves, stood facing one another. Marian spoke first.

”So, what is it that troubles you so much, darling…♡?”
”W-What do you mean…. When my tool for discipline is suddenly pulled from the market, of course I’d be upset!” Amelia burst out.
The two nuns drew closer, a stunning coexistence of spiritual devotion and raw feminine allure. Regardless of their heated discussion, the space between them seemed to generate a black hole-like gravitational pull that could suck in any man nearby. They really had made the right choice by not continuing their argument in the hallway.
”Yes, I can certainly understand your point, dear♡ Amelia-chan has been especially dedicated to her ‘spiritual discipline’ lately, hasn’t she…”
”Y-Yes…. I want to deepen my ‘discipline’ and gain more control over myself, Mother. You were encouraging me just a moment ago, weren’t you! I want to become a respectable nun, just like you, Mother!”
”Amelia-chan…”
Sister Amelia’s passionate confession made Mother Marian’s body tremble. To Amelia, Marian was a magnificent predecessor. In a convent that had seen many years and where many ‘Mothers’ were now just titles, Marian was a truly respectable Mother Superior.
She possessed rare beauty and charm, yet she maintained a pure spirit unconsumed by desire. She was skilled in advanced ‘God’s Miracles’ and was versed in the true art of demon-slaying. A faithful follower and living embodiment of the Church of Demon-Subjugation’s teachings, she was a figure of authority not just in the convent but throughout the entire Church.
That was why Amelia couldn’t understand. Why would Marian seek to restrict the ‘Tremble-D**do-Buddy’? Hadn’t she enthusiastically guided the sisters in their “spiritual discipline,” even recommending it?
”You’re right. I wanted to keep cheering you on. But, my dear, that ‘Devil’s Rod’ is simply no good for us… The Path of Demon-Subjugation cannot be reached by continuing to use that thing. It will only lead us to drown in our own desires.”
”T-That’s not true! I finally overcame the temptation of the ‘Tremble-D**do-Buddy’ last night! I endured that ordeal without yielding to pleasure, even though my womb was directly vibrated!”
”W-Wait, really…? Is that truly the case…!?”
Marian was genuinely stunned by Amelia’s declaration. This cute sister, who was both her pupil and her junior, was so honest she seemed incapable of lying. Therefore, her words had to be the truth.
”I see, you were able to shake off that temptation…”
”Yes! So that’s why…!”
”But, it’s still no good, dear…”
”Why not!”
”……”
Marian furrowed her brows. Her sensuous expression was enough to make Amelia, a sister and a woman, gasp in spite of herself. But she couldn’t give up now. For Amelia, abandoning the fight with the ‘Tremble-D**do-Buddy’ meant the defeat of her faith.
To conquer that intense pleasure and control her own desires—she felt she couldn’t walk the path of faith with her head held high until that was achieved. So, she pressed Marian once more.
”…Please tell me the reason! Otherwise, I simply cannot accept it!”
”Yes, you’re right…. Forgive me, Amelia-chan, I… I was not able to conquer that ‘Tremble-D**do-Buddy’ myself…♡” Marian admitted, her face flushing red as she exhaled a heated breath.
”Eh…!?”
Amelia doubted her own eyes and ears. That Marian, whom she respected above all others, could have been defeated by a pleasure that she, with great effort, had managed to conquer…
”It’s no good, you see…. Even now, the memory of that ‘Devil’s Rod’ trembling inside me has left my body burning hot. It’s not just me. All the other sisters, save for you, have completely given themselves over to the pleasure, not the ‘discipline,’ and embraced the device…”
”S-Surely not…!”
”The Church is taking this fact very seriously, and before long, the ‘Tremble-D**do-Buddy’ will surely be certified as a ‘Forbidden Tool.’ I believe it should be. That vibration is not something one should approach so casually…. Consider, for instance, the Succubus King’s Incense¹ said to have captivated tens of thousands of women, or the Succubus Queen’s Amatory Fluid², just a single drop of which was enough to bring a whole city’s water system to a standstill. Or even the Slime That Dissolves Only Clothes³, which was created through cross-breeding, the X-Ray Glasses that made all women around the world hesitate to go outside, or the infamous ultimate trap, the Sensory Deprivation Pitfall…”
”You’re saying the ‘Tremble-D**do-Buddy’ is on par with those ‘Forbidden Tools’…? With the demonic artifacts that caused so many disasters in the ancient past…”
Marian nodded slowly in response to Amelia’s question. Because Marian was so well-versed in all forms of pleasure, and because she wished for the peaceful lives of the sisters and all of humanity, she had decided that this demonic device absolutely could not be permitted to stay in use.
If Kento were present, he probably would have casually muttered, “Isn’t that a bit dramatic for just a vibrator…?” But to the people of the Church and the convent, who had sworn to protect humanity from the pitfall of pleasure, it wasn’t dramatic at all.
Every ‘Forbidden Tool’ started with a tiny flaw. Even that Succubus King’s Incense was initially thought to have the effect of warming the body and promoting good health. But as it spread rapidly, becoming a common sight in any moderately wealthy home, it showed its teeth.
That ‘Forbidden Tool’ had a powerful addiction factor, and soon, women couldn’t even get out of bed without the Succubus King’s Incense. They would be struck by unbearable chills, and their bodies wouldn’t stop shaking. Yet, if they inhaled the Incense, they would immediately turn into beasts craving the bodies of men.
When counting both those who died from withdrawal symptoms and those who died from exhaustion during coitus, it is said that the death toll reached a tenth of the population in the country where the Incense was prevalent at the time. That country eventually lost its national power and no longer exists on any map.
It was a history that non-devout believers might have forgotten. But the Church and the convent had not forgotten that tragedy. Sister Amelia, who lived her faith so earnestly, couldn’t possibly be ignorant of the history that had been quietly, yet surely, passed down.
”But, still…. Is that true? That magical tool has no magic flowing through it. There don’t seem to be any medicinal effects leaching out of it either…”
”You’re right. The danger in that sense is low. But listen, Amelia-chan, do you think that particular vibration mechanism will only ever be mounted inside a ‘D**do-Buddy’?”
”Eh…?”
”The Church’s sacred tool artisans took it apart and analyzed it, you see. Guess what they found inside?”
”I-I don’t know…. I thought it was some kind of mechanism using magnets or something.”
”Not far off. The answer was a mysterious mineral and a material derived from some kind of unknown creature. The problem is, when they broke it in half, or when they stacked several of them together, it still showed similar behavior. The intensity of the vibration changed, of course.”
”…!”
”I see you’ve finally realized it. The shopkeeper would probably have produced a second and a third ‘Tremble-D**do-Buddy’ if we hadn’t intervened. A thumb-sized ‘Tremble-D**do-Buddy’ to be strapped to the n**ples or the cl**oris. Or perhaps a large-scale one that could vibrate the entire lower half of the body…. Sister Amelia, have you ever used a second or third one while the first ‘Tremble-D**do-Buddy’ was still inside you?”
”N-No…. I was thinking of trying it sometime soon.”
”I see…. But I think you can imagine the result now, can’t you…”
”…Yes.”
It was at this point that Sister Amelia finally recognized the true danger of the ‘Tremble-D**do-Buddy.’ The pleasure she thought she had conquered yesterday had been only the mere entrance. Marian’s confession of defeat was likely about the pleasure two or three steps beyond Amelia’s current experience. Amelia felt ashamed of her own hasty judgment.
”So, you understand now?”
”Yes. I apologize for causing such a fuss…”
”It’s alright, dear…♡ But yes, since you’ve now understood the danger of the ‘Tremble-D**do-Buddy,’ I think I’ll ask you to do a little job for me, shall I…♡?” Marian beamed, returning to her usual alluring, flirtatious manner towards a downcast Amelia.
”A job…?”
”Yes, a job. You were acquainted with that shopkeeper, weren’t you?”
”W-Well, yes, I suppose so…” She didn’t want to admit she knew that perverted shopkeeper, but she certainly wasn’t a stranger to him. But what did that question have to do with this job? As she wondered, Marian smiled broadly.
”Sister Amelia. I’d like you to monitor the magic tool shop ‘Harvest’ for me, dear♡ I need you to go and investigate whether that shop is quietly complying with the ban and, more importantly, whether or not they’re making any more dangerous items! Oh, and there’s no specific deadline, but please report back to me regularly, alrighty♡?”
”Whaaat!?”
—
Summary:
Mother Marian, the revered superior, shockingly admits her failure to resist the Tremble-D**do-Buddy’s pleasure, explaining to her earnest student Amelia that the device is a Forbidden Tool on par with ancient apocalyptic artifacts. She argues its potential for mass-produced, multi-layered temptation is too great, a terrifying realization that makes Amelia accept a new secret mission.
—
Character Insight:
Amelia’s earnest faith and pride are completely shattered by Marian’s admission, realizing her own spiritual victory was only on the first step. Marian’s willingness to ban the device despite her own desire shows her true dedication to the Church’s safety policies, prioritizing public welfare over her personal weakness.
—
Behind the Scene:
The ‘Tremble-D**do-Buddy’ is not merely a sex toy; it’s a test of the Church’s entire philosophy of asceticism. The history of Forbidden Tools is crucial to understanding why the Church is reacting so aggressively to a seemingly simple vibrating device, establishing the world’s high-stakes approach to pleasure and vice.
—
T/L:
¹ The Succubus King’s Incense (淫魔王香) is a classic example of a magical item that causes highly addictive desire, leading to societal collapse—a kind of historical-magical drug. ↩
² The Succubus Queen’s Amatory Fluid (サキュバスクイーンの愛液) is another ‘Forbidden Tool’ that highlights the threat of mass intoxication and widespread loss of control. ↩
³ The Slime That Dissolves Only Clothes (服だけを溶かすスライム) is a lighter-sounding, yet equally disruptive, ancient artifact mentioned to emphasize the wide range of dangers the Church monitors. ↩
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.
• Marian – A ‘Mother’ and supervisor from the Church of Demon-Subjugation. Her appearance and demeanor defy the Church’s purported ‘chastity,’ instead she has wavy purple long hair, busty, black nun, tear mole under eye, and monroe walk. She has arrived with a clear purpose: to confront Kento about the ‘Devil’s Stick.
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Edited by Kanaa-senpai.
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