Chapter 81 The Isekai Magic Shop That Only Sells Adult Goods
Edited by: Kanaa-senpai
Having finished expelling a large quantity of the “Slime-kun Who Dwells in a Woman’s Arsehole” right before my eyes, the test subject slave, Lily, remained huddled and seemed unable to recover for some time.
”It’s all right,” I said. “Seeing you push out the ‘Slime-kun’ was cute too, you know?”
”Please, Master, don’t speak anymore…” she managed to reply.
Though she had leaked before many times, this was different and hard for Lily. Her face was bright red, and she glared at me with teary eyes. I thought how fun it would be when it was the other girls’ turn.
After I quietly stroked her back for a bit, Lily seemed to accept it. She let out a small sigh and lifted her face.
”So, which one shall we try first?” she asked.
”Well, I suppose we should start with the one for beginners,” I said.
What I took out was a set of back beads, or rather, the product named “Seven Stars of the Back Door,” in the S (Small) size. The color of both the balls and the string was pink, matching Lily’s hair. This was a top item from my shop, one that gave me lots of trouble to make—though it was still just in testing.
The main problems were making it safe, bendy, strong, and easy to clean all at once. Compared to one-piece items like “Ddo-Buddy,” back beads with balls linked by string have a harder build.
It would be a disaster if the string broke and a ball got stuck inside. But if I made the string too strong for safety, it would lose bend and could hurt the back door or insides, making it less safe. With the string wearing out from bad care, the job was huge.
In the end, I used the same stuff for the balls as “Ddo-Buddy”—a mix of Red Slime body fluid and Akanashi Tree sap (the “Ddo-Buddy Fluid”) hardened with magic. For the string, I picked Caramel Spider silk. I would ask Tania and others for more of that silk.
”Alright, then, I’ll put on the back lotion, ‘Back Loosener,’ first, shall I?”
”…Yes,” she replied.
Lily, who no longer even cared about my naming, answered quietly and showed her back while on all fours. As I dropped the “Back Loosener” (real name: “Morning Dew of the Chrysanthemum¹“) from the bottle right on her back door, she jumped and shook her bottom from the cold.
This lotion was great too, made just for the back door. As the name says, it had stuff to relax and open the back ring, plus parts to stop dark spots.
With this, anyone could get the best back door: smooth, bright, soft, and still tight, without messing up normal use!
”Nn…!”
As I scooped lotion with my fingertip and spread it, Lily made a small sound through her nose. Her front area fluttered like always and looked ready, but I stayed focused on her back door.
”How does it feel?” I asked.
”Nn, I feel it warming up slowly, but not sure yet…” she said.
That made sense, so I kept rubbing the lotion in for a while. Just as her breath got hot, it was time to go in.
”Now, I’m going in, all right?”
”Y-Yes, please…!”
Slip… Thanks to the “Slime-kun,” Lily’s back ring took my middle finger easy. I felt a wet, smooth feel on my tip, the warm inside, and the back ring squeezing hard.
”Hiiih… My Master’s finger is really in my bottom…!”
Lily seemed to feel both push-back and weird pleasure from taking my finger. I wanted to see her face, so I moved to look. Her cheeks were red with joy, and her eyes, foggy, stared at nothing. Her eyes met mine.
”W-What are you looking at?!” she said.
”Oh, just wanted to see your face while poking your back door,” I replied.
”M-Master, really!”
Sadly, Lily turned her face away from shame. Since I was by her side, I slipped my hand under to touch her chest. The soft part filled my hand. I liked the weight while putting more “Back Loosener” inside.
”Come on, it won’t be a test if you don’t tell me how it feels. Starting to feel good?”
”Ugh… I-It feels good… It’s different from the front; a pleasure with bad feeling…! Like eating sweet dessert you shouldn’t, a forbidden joy on my body…!”
As expected, great words from a girl who knew all my shop items. Hearing her say it while shaking her shoulders and bottom, really feeling it, got me excited too.
”Any pain? I’m going to do more now, so tell me right away if it hurts or bothers you, okay?”
”I-It’s fine, I get it…! No real pain; it just opens easy and natural, which scares me, and that scare makes pleasure better…!”
Lily talked, enjoying the bad feeling. Her back ring squeezed tight, pulling my finger. This pink lewd girl… I wanted to go wild on her, but held back. Wait, wait for now.
”Good. Then, time for the back beads, the ‘Seven Stars of the Back Door’.”
”Y-Yes, please…!”
I got back to see her back door and pulled out my finger, hugged tight. Her bottom flesh followed it. Was she feeling good from that rub too?
I took the “Seven Stars of the Back Door” and put more back lotion, “Morning Dew of the Chrysanthemum.” The twitching back gate was loose and looked changed. I got why they say “opening up.”
”Here I go, then.”
”Yes. Nn…!”
I pressed the first ball to her back gate, and it got sucked in, gone. I felt a thrill seeing it vanish and the “Seven Stars” get shorter.
”You okay?”
”Yes. Your finger felt bigger, Master…!”
I checked as the second, then third ball went in her back door. The shorter the beads, the more the inside stuff felt big. That fact made me super happy.
”M-Master, slower please…!”
”Ah, ah. Sorry,” I said.
Lily said it, breathing short, maybe from too much in a row. Bad me, having too much fun.
I calmed her by stroking her bottom and hip, and when calm, put in the next ball. The back door opened to take it, then closed on the string. Fun to watch open and shut—I saw I got better too.
”This is the last one.”
”Y-Yes…!”
The last ball went in, leaving just the safe ring at the end. This ring stops beads from getting lost inside. Lily with the swinging ring on her bottom was super lewd.
”You did great. Okay inside?”
”I-I’m fine, but feels weird, going so deep…!”
The “Seven Stars,” longer than my finger, went far into her insides. Plus, unlike “Slime-kun,” their hard feel made it stronger.
”Want to get used to it a bit?”
”Yes. A-Um…!”
”Hmm? What?”
”I want a reward first…!” she said.
”Mm, come here,” I replied.
She turned happy and hugged me. I took her, put her on my lap, and gave a soft kiss. Even then, the back beads stayed in Lily’s back door.
Thinking that got me excited and soft, and I spoiled her lots. Like, deep kiss while rubbing her tips and stirring her wet front area I skipped till now.
Soon, she rubbed her face on my chest and hit a deep peak quietly. “Fuuh… fuuh…” her soft sighs. I stroked her sweaty warm body, feeling her shoulder lines.
”Ready now?”
”Yes…!”
I put her back on all fours, bottom high. Looking at her ready front area, I touched the safe ring. Lily made a small sound. Her feel got stronger too.
”By the way, what was peaking like with beads still inside?”
”Different than usual; forced to notice a spot I ignored… Rubbing the front side worked best…!”
Testing went well. Happy, I tugged the ring light so beads stayed. Each time, Lily breathed sweet and gasp.
”Well then, pulling them out now, okay?”
”Y-Yes! Ah, ah! Nnnnngh!”
First bead pushed the tight back ring, and with a pop! came out cute. Just knowing this ball was inside her…
She took many toys in front, but back door and these beads made it way lewder. I pulled again quick, out came the second.
”Ha-ungh! Ah, ah, it f-feels so good!”
”Yeah? I’ll keep going then.”
”Hiiiih! Y-Yes, please!”
Third bead. Fourth and fifth popped quick pop-pop. I was shocked and thrilled seeing beads I put in come out. But only two left. I pulled sixth and seventh, beads hung loose.
”Fuuuh, fuuuh, fuuuh…”
”All out. Tell me what you think.”
”Y-Yes… Honestly, I thought too little… Knew pulling out feels best, but could get hooked…!”
”That much? You didn’t peak, right?”
”Like a new kind for now… Might change later. But they’ll sell. More curious, more pulled in.”
”I see… Well, then, try the M (Middle) size next?”
”…Yes,” she whispered.
She really loved all my shop items. Her eyes lost first shame and showed big want to know.
—
Summary:
Lily, still recovering from expelling the ‘Slime-kun’ product, begins testing the ‘Seven Stars of the Arsehole’ anal beads. The Master applies the ‘Ass Loosener’ lotion and manually prepares her. They discuss the unique, ‘wicked’ pleasure of anal penetration. The Master inserts the small beads one by one, then stimulates her to a climax while the beads are inside. Finally, he extracts the beads, and Lily gives her feedback, noting that the extraction is highly pleasurable and expresses a desire to try the larger size.
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Character Insight:
The Master’s obsession with ‘development’ and ‘testing’ is a thin veneer for his own escalating, complex desires. His initial empathy for Lily’s embarrassment quickly transforms into anticipation for the ‘fun’ of her experimentation. Lily, in turn, has evolved from a fearful test subject into a dedicated, almost philosophical connoisseur of his perverse products, finding a way to frame her degradation as a form of ‘wicked’ expertise. Her request for a ‘pre-paid indulgence’ shows she is now actively manipulating the dynamic for her own pleasure and comfort.
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Behind the Scene:
The internal monologue reveals the surprisingly complex engineering challenges in developing a safe and effective sex toy, showing the protagonist’s technical skill (using Red Slime fluid, Akanashi Tree sap, and Caramel Spider silk). The casual naming of illicit items like ‘Ass Loosener’ contrasts sharply with the formal chemical/magical components, highlighting the blend of crude humour and scientific rigour in his work.
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T/L:
¹ The name “Morning Dew of the Chrysanthemum” refers to the anus, which is often metaphorically called a ‘chrysanthemum’ (菊門, kikumon) in Japanese erotic context, due to its shape. ↩
Notes:
• 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.
• 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.
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Edited by Kanaa-senpai.
Thanks for reading.
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