I quickly returned to the inn I’d booked nearby and paid the innkeeper additional fees. Together with my childhood friend—Aine.
Without having had enough time to really talk with Aine, I’d promised that I’d pay the remainder of the money to buy Aine later, after having had proved to the slave merchant that I was an ‘S-rank’ adventurer.
I’d thought that he would overcharge, but he was upright… putting it that way was weird, but I supposed he was a decent slave merchant.
She was expensive, still, but nothing I couldn’t afford. It was more or less… enough to deprive me of most of my earnings, though.
When we returned to the room, I immediately had Aine sit on a chair, sitting face to face with me.
“Errr, for starters… Long time no see.”
“…”
Aine didn’t reply to my words. She kept her head down with a gloomy expression.
I’d bought her some clothes to cover herself with on the way, but she was shaking, gripping the hem of those clothes tightly. …I couldn’t help but wonder how I should approach the conversation.
This was our reunion after a long time of not seeing each other—the truth was, there were a lot of things I’d want to talk about.
Some part of me also would like to boast that I’d become an S-rank adventurer.
However, right now was not the time for that. Just as I was thinking: I have to hear what she has to say first—
“I didn’t want to be seen like this. Just by you…” Aine said in such a manner while biting her lips.
It was the same when she’d been held up in the carriage—not trying to see me in the face, looking like she was trying hard not to be seen one way or another. …Certainly, she must not want to bee seen that she had become a slave.
But, I was more worried about Aine.
If I hadn’t come across her, she’d have been sold to some unknown person, and I might never have been able to meet her again. So, I clearly told her: “I’m happy, you know; I get to meet you again. It’s in this way, but—”
“I’m not happy at all! To think that I became a slave, and have you buy me, I… I’m just causing trouble…!! It’s much better if we never—”
“Aine.”
“!!”
When I called her name, her body trembled with a start. …Moving gently to her side, I admonished her as gently as I could.
“Everything’s alright. You don’t have to worry about money and stuff. I’m so happy, that I can meet you again.”
“Uuwh, uuwh… I-I’m sorry, I-I—”
Aine was crying, trying to stifle her voice.
I could ask her about it later. For now, I’d start by making her feel at ease.
On Aine’s neck was attached a collar, one of the symbol of being a slave.
Shackled with a chain, it was depriving her of her freedom.
As I was thinking: is there any way I can get it off…?; Aine stopped crying and pulled away from me.
“I’m sorry… and, thank you.”
“Yeah, it’s fine. And so… umm.”
“I know. About how I became a slave, right?”
“…Yeah, if you don’t want to talk about it—”
“No, I’ll talk. I mean, you came to save me, and you’ll know about it if you look it up anyway.”
Even though Aine was averting her gaze, she continued her words as if she’d made up her mind. “I became a knight in Laveira Empire—did you also hear that from the village?”
“Yeah, that one time when I returned. I’ve been thinking about going there eventually, though…”
“Then you’re lucky you didn’t come. Right now in that country, the power struggle is escalating. It’s a domestic dispute. I became a knight in such a country—I’m a real idiot, aren’t I? I’m not interested in that kind of thing, but my evaluation as a knight was way too high for the so-called commoner. That’s why… they accused me of the ‘knight killing’ that happened during an expedition.”
“Knight killing, you say?”
“Yeah, I heard several people including a fort’s superior officer were killed. I wasn’t there, but the other knights testified they saw me do it. Even if I denied it, the witnesses were too many—and so, I was jailed as a criminal.”
—Aine had been betrayed by her comrades and degraded from a knight to a slave—
It was too unreasonable, but I supposed the Empire’s internal affairs were that tense.
She might not have been interested in such a dispute, though.
“If it’s you, you could’ve just run away, couldn’t you?”
“…Running away from a crime I didn’t do, I hate it. That’s why I waited for a chance to explain myself—but, in the few days of being jailed, it was immediately decided that I would be reduced to slavery.”
Probably, they knew that there was a chance she might run away.
Also, the last time I’d seen her was about four years ago, but her ability was high, to put it bluntly.
The current me thought so, so probably an ordinary knight wouldn’t be a match for her. …This was what she had become because she was upright.
After finishing her story, Aine smiled deprecatingly. “What do you think…? It’s just so stupid, isn’t it. Someone like me, really isn’t worth savi—”
“Aine, don’t make me repeat myself. There’s no need for you to feel that way. That’s exactly why I bought you. I’ve judged that you just have that much worth.”
“…!! Hey, since when can you talk like that, really.”
Hearing my words, Aine showed a slightly surprised expression.
I said something rather embarrassing…. That was indeed the case when I thought about it, but first and foremost it was for Aine.
As if I had made up my mind, I replied to her words. “Yeah, actually… I’m an S-rank adventurer now. I worked really hard to catch up with you, you know.”
“Ooh, an S-rank—wait, S-rank…!? You are a first-class adventurer…!?” Aine said in a loud voice, blasting away the gloomy atmosphere from earlier.
“Y-you’re too loud.”
“Ah, I-I’m sorry. But… right. You are, an S-rank… I also wouldn’t have expected that either.”
Apparently, Aine hadn’t known.
Although the Kingdom and the Empire were a neighboring country, they were quite the distance apart.
It wasn’t like I knew all the adventurers active over there either, and she probably had been busy with her job as a knight as well.
“Yeah, so for now, you don’t have to worry about money. And then, about this collar—”
“! Th-this is…!!”
Aine quickly touched her collar and distanced herself from me.
…As expected, maybe she didn’t want to talk about the collar, the symbol of a slave—meanwhile, Aine started to talk evasively while averting her gaze.
“Th-this is… umm, called, ‘Sexualification Collar’.”
“‘Sexualification Collar’…? So there are different kinds of slave collars?”
Hearing my question, she nodded.
“You can’t take it off?”
“…If it’s easy to take off, a slave might quickly riot, right? So that you can’t do things like that, it can’t be taken off. In a normal way, at least.”
“…I see. Then we have to find a way to—what’s wrong?”
“Nn, no, it’s, nothing… nn,” suddenly Aine replied in such a way with a blushed face.
No matter how I looked at it, it didn’t look like ‘it’s nothing.’ The sight of her trying to resist something while writhing her body was strangely sexy, making me avert my gaze reflexively.
“Th-there’s no way it’s ‘nothing.’ Just what’s going on…?”
“Hah, nnn… at times, like this…!”
Looking reproachful, Aine’s breathing was becoming rough. To the point it made me think: could it be some kind of curse or illness?
“…Are you not feeling well? Let’s get a doctor for now.”
“I, I’m, okay!!”
“No way you’re ‘okay.’ I’m worried about you. I’ll be back quick—”
“It-it’s this collar’s, fault!!”
“…This collar’s?”
“Y-yeah… nahh, th-this collar… this ‘Sexualification Collar’ is, used for… sex, slaves…” Aine continued her words while panting roughly. While looking at me with moist eyes, “once a day, I’m forced, nn, to go into, heat…” Aine said it straight in a desperate voice.
—I finally understood the situation Aine was in—
She was right now… no, probably since a while back. She was being forced into a state of being in heat.
I laid Aine on the bed, who was unable to move without my support.
Still breathing roughly, she was looking at me with a blushed face. …I’d never seen Aine like this before.
Looking at her state, it must be quite rough. I’d like to relieve her right away, however, “will it get better in time…?”
“N-not time… err, i-it won’t do, unless I do, naughty, things,” Aine said, quickly turning her face away. …It was quite the nasty collar someone had put on her.
I suppose it was made so you could be brought into heat under any circumstances.
Aine looked to be desperately enduring it, but she was being forced into a state of arousal by the magical effect. She probably wouldn’t be able to just endure it.
Surely, she might not be able to stand the fact that I was watching her in this state.
I turned my back towards Aine. “I will, umm… be out for a bit. Errr, so you can, by yourself—”
“By myself, won’t, do… I need, someone to, nn…!”
I spontaneously turned around again at Aine’s voice, which sounded like she was pleading with me.
Moist eyes, and blushing cheeks. The rough breathing made my childhood friend look so sensual to no end.
I’d never seen Aine like that before—I thought I’d never, but now that I saw the current her, I felt like I was being tested as well.
Letting out a small breath, I sat down next to Aine.
When she said ‘I need someone,’ I supposed there was no choice but for me to do it. Right now I was her master after all.
“Aine… so, can I?”
“…Nn”
Whether it was a reply or a pant, I didn’t know, but Aine flipped up her clothes herself without saying a word.
—When her secret area, which was not even wearing any underwear, was revealed, it was already wet with her love juice. And then, when that beautiful skin came into my view, Aine hid it with her hands as if she’d noticed something—
“I-it’s not that it’s not, growing, I-I shaved it…!”
…I didn’t ask about that.
However, Aine must’ve noticed it and then hid it. Of course, when we were kids, we’d had at least naked times together—but now that we were both grown up, we hadn’t got the chance to see each other. Not like there had been any either.
And she’d fallen into slavery, was made into heat forcibly, and now she was hiding her lady parts in embarrassment.
If I were to be honest, it was so hot—however, she might not like the idea that I thought that way either. So, it was necessary for me to handle it calmly.
“Aine, can you move your hands for me?”
“……uwh.”
“It’s okay; It’s very beautiful.”
“No, d-don’t, say that, stuff like that…!”
I meant to compliment her, but Aine glared at me with an incredibly embarrassed expression.
Reluctantly, I forced her hands away. Perhaps the current Aine had no strength to resist, so I could easily move her hands away by just gently holding her hands.
I could see her twitching and quivering vagina. Aine’s body was also trembling as if she was frightened.
Holding the gloves I was regularly using on my mouth, I took them off and I gently touched Aine’s lower part.
That alone was enough to make Aine’s body spring up greatly.
“Niihh!?”
“! S-sorry!” I instantly apologized. In the first place, I never had this kind of experience.
Aine shook her head from side to side and hugged the pillow that was nearby. While hiding her face, she looked at me and said: “it-it’s fine.”
“…Eh?”
“If it’s you, Lunois, it’s fine; as you like, touch it…?”
—I’d never seen my childhood friend showing such a meek gesture like this—
It must be hard for her, too… Although she must have such a feeling, I felt that I had to respond to her feelings more than anything else.
I touched her vagina with my fingertip and gently opened them. Both the area of the folds and the clitoris were a beautiful pink.
“It’s fine, with, just, fingers. I-if I cum, I’ll get better…”
“…Got it. Please bear with it for a bit.”
“Nn, nnh, hyahh!?”
Stroking her, I touched her private parts.
While thinking: I wonder what to do to make her feel good…; I checked for her reaction. The pillow had completely changed its shape, perhaps because she was hugging it so strongly.
Trembling, she looked so fragile to no end, and yet, very sexy.
Stroking her vagina as gently and tenderly as I could, I proceeded to insert my fingertip.
With a jolt, Aine’s body greatly sprung up.
“Naahh!? Wa-waiiit! B-be more gen, tle…”
I thought I was being gentle, but Aine’s reaction was strong.
…Either she was getting quite sensitive, or she was sensitive to begin with. The inside of her vagina was quivering as I continued to stick in my finger.
She was already wet, so my finger slid in.
“I’m, still, a, virgin… so, that’s why; that’s why, the finger, until deep iiis…”
Under this circumstance, she was still a ‘virgin.’ If the current her were sold as a sex slave, perhaps that would be where they’d found the worth in her.
A virgin young knight—there were some people who’d prefer it.
I complied with her words, stroking my finger inside her vagina and touching her clitoris with my thumb as well.
Again, Aine’s body sprung up greatly.
“Hiih, ahh, no, I’ve told youu, to be gentleee…!”
“I’m already being gentle enough, you know? Aren’t you just sensitive, Aine?”
“Wro, wr-wrong! I’m, not, a dirty, girl…!”
Seeing her no longer able to talk cohesively anymore, I couldn’t seem to contain my arousal either.
However, to insert myself into her here—surely it would be wrong.
With just my fingers, I kept touching her until she came.
Before long, Aine’s body trembled greatly, “nn, hiih, ah, AAAHHH!!” and went limp and weak, and stopped moving. When I pulled away my hand, a sticky thread of her love juice was pulled.
For the time being, her heat seemed to have settled down—But, Aine, who couldn’t move and was with tears in her eyes, seemed to be struggling to keep her rough breathing under control for a while.
I, too, took a small, deep breath and calmed down my heart. …Having bought her meant that I’d have to do this kind of thing every day.
For a while, Aine was lying on the bed without saying a word.
I, too, sat back down on the chair and turned my back to her and started to think.
Speaking of the first thing I could do would be to take her collar off somehow.
Although inevitable, it shouldn’t have been Aine’s intention to be forced into it.
As I was in my thoughts, I could hear the sound of her getting up coming from the bed with a creak.
When I looked back at her, a pillow came flying at my face.
“…Don’t look, yet.”
“…Sorry.”
“Ah, uwh… umm, I’m the one, who should apologize. Even though, I’m not really in a position, to talk, like this,” awkwardly, Aine said such a thing.
I took a deep breath once again and placed the pillow on the table.
Aine was still looking embarrassed and averting her gaze—it must be hard to forget about that act that had just happened. However, we must talk about what was to come.
“Let’s see, for now, I’ll find a way to get that collar off you.”
“…This?”
“Yeah. You hate it to be that way forever, right? From now on—it’s inevitable, but your… umm, I’d have to help you with it. I’m sure you probably don’t wanna keep living like that.”
“…”
My words were met with silence from Aine.
While looking to be hesitating, she put her hand over her mouth and, “it’s not like, I hate, it.”
“Eh?”
“—!! I-it’s nothing! Anyway, if you’re going to take it off then, yup. I think I wanna find a way to. But, I don’t wanna trouble you, so…”
“Aine, don’t think you’re troubling me, please.”
“…Even if you’re like that, I think I am!”
“…Even if you are, alright. You can’t even act independently as it is, can you? Or maybe, you want to have someone else take care of it?”
“Th-that’s… in the first place, I can’t, do that, though.”
“Nn, you can’t?”
“I mean, my current owner is you. You put your magic power into the collar, right?”
“Ah, yeah. It’s necessary for the contract he said—don’t tell me.”
When I heard those words, I realized the truth.
By putting my magic power into her collar, the owner was now me.
So, in the event that she went into heat because of the collar—that meant I’d be the only one who could do anything about it. …In that case, I’d have to help her anyway.
“Then, there’s no choice but to rely on me, isn’t it?”
“That’s, true… but doing that kind of thing with you every day, is a bit…”
Aine’s eyes were swimming around. As expected, she was also a girl—she must not like to have someone who was not her lover touching her precious parts.
However, she’d have to put up with that for a while.
“I’ll try to make it as quick as possible. In addition, I’ll also do my best to get the collar off soon. I’m an S-rank adventurer now. So, I want you to believe me.”
“…I-it’s, not like I don’t believe, you.”
“Then, I take it you’re okay with me?”
“I get it. In any case, I’m a slave you bought after all. It’s not like I have a choice,” Aine said, turning her gaze towards the window.
For the time being, it seemed I’d gotten the OK from her.
Our current goal was decided—the first step was to take off her collar.
If we could do just that, I could have Aine’s freedom back. Until then, I’d have to force her to endure it, though.
”Alright, for now, best regards, Aine.”
“…Best regard, Lunois.”
And in this way, Aine and I were reunited and became master and slave.
TL notes:
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I Can't Read Japanese TL 
Wow… Looks like there will be hell to pay for whoever framed her and made her a slave. You just know the MC is going to come across whoever did this eventually, and he will have a whole can of whoop ass for them.
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Well well well. Looks like “that” will happen again everyday
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