“Hehe♡ …This bastard, from the beginning… if you say it nicely, they won’t listen… stubbornly sticking to their ways. Hmph♡”

    Lee Ji-eun stopped whispering and began to shake her hips vigorously, inserting my mana into her vagina.

    And on top of that, I penetrated my penis into her uterus.

    I could feel my glans entering a tight and squishy space that shouldn’t be entered.

    My large penis pierced through the cervix, entering the uterus.

    It was the result of Lee Ji-eun’s control over mana.

    “Woof woof!”

    Lee Ji-eun’s barking seemed to be urging me to ejaculate quickly.

    I didn’t want to give in and release my semen so easily, so I resisted as much as I could.

    But Lee Ji-eun chuckled and urged me to resist, inserting more mana into her vagina.

    “Ah♥ Kya♥ Ugh♥ Oh♥ Ahh♥ Ohh…♥ N-no…♥ Ah, it’s…♥ Y-yes…♥♥”

    Squelch squelch squelch squelch!

    Of course, in the end, I lost.

    I couldn’t win against Lee Ji-eun, who controlled the mana inside her vagina.

    Although I tried to live a life where I dominated women in this gender-reversed world,

    I ended up becoming a sexual slave to the female genitalia, and it was frustrating and unfair that my spirit might be broken.

    And it was even worse because Lee Ji-eun was the one who started it all.

    “Hehe…♡ If you’re going to surrender in the end, don’t resist. Just. Ahh♡”

    Lee Ji-eun whispered in my ear, declaring her victory.

    I felt tears welling up as I thought about being dominated by aggressive women and succumbing to the fate of the female genitalia.

    “Ugh…♡ Are Ji-eun and Do-jin already done? Let’s continue…♡ I haven’t finished yet♡

    I think Do-jin has a weak and premature erection♡ If I insert mana into his vagina, he becomes a fool and can’t regain his senses♡

    I need to train him diligently to endure longer, not just for 3 minutes♡♡”

    Kim Ji-na said that my penis was weak and premature.

    She had already brought a small pink dildo and was passionately stimulating her own vagina.

    But isn’t the control of the vagina’s mana a cheat in itself?

    It’s quite unfair. Other men probably can’t resist it either…

    But at least I managed to endure this much…!

    Whether I thought about it or not,

    Lee Ji-eun, as Kim Ji-na said, resumed the intimate position.

    Lee Ji-eun watched Kim Ji-na masturbating with the small pink dildo intently.

    Suddenly, there was an increase in vaginal secretions from Lee Ji-eun’s vagina.

    Excited by Kim Ji-na’s masturbation, Lee Ji-eun gasped and inserted my penis into her vagina, shaking her hips.

    “Ahh…♡ Watching you two have intercourse…♡ excites me♡

    Do I have this kind of fetish…♡ Or is it just because I’m watching the dogs I raise mate…?

    Or is it because it feels like watching a live adult video in front of me?

    Ah, I don’t know♡ Hah♡ It feels so good♡ Ugh♡ I think I’m going to cum soon♡ I-I’m going…♡ G-gone♡♡”

    Kim Ji-na came with a loud moan while masturbating with the small pink dildo.

    She gasped for a moment, then opened her eyes dazedly and focused on me and Lee Ji-eun.

    “Now it’s my turn…♡ Do-jin’s penis♡ the dog’s penis, I want to use it too…♡

    Female dog♡ you’re using the dildo I used…♡ Here, take this.”

    “Woof!”

    Kim Ji-na seemed to deliberately speak in a slightly commanding tone, unable to refuse Lee Ji-eun’s request.

    Yi Ji-eun seemed to prefer using the small pink dildo that Kim Ji-na had used for masturbation.

    Handling the pink dildo as if it were a treasure beloved by Kim Ji-na, she inserted it into her vagina with a look of happiness on her face.

    “Ah…♡”

    And then Yi Ji-eun immediately collapsed. She seemed to be on the verge of fainting, lying motionless on the floor.

    Kim Ji-na paid no attention to Yi Ji-eun’s condition and focused on my penis.

    Her lightly pink, beautiful vagina, soaked in Kim Ji-na’s juices, eagerly sought out my penis and enveloped it.

    “Ah♡”

    With a voice that sounded pleased.

    I felt a soft yet firm and strong pressure.

    The sensation of Yi Ji-eun’s vagina was different from that of Kim Ji-na’s.

    If Yi Ji-eun’s vagina felt aggressive with a firm and bouncy texture,

    Kim Ji-na’s vagina had a soft, firm texture that applied overall pressure, as if coaxing my surrender.

    The difference in their personalities seemed to be reflected in their vaginas as well.

    “Ah…♥”

    If there was one thing in common,

    I couldn’t seem to regain my senses with either of them.

    Kim Ji-na, in her role as a dominant owner training a puppy, did not pounce on my penis like an animal. Instead, she stood upright and skillfully stimulated my sensitive areas, inducing pleasure.

    “Ah♥ Just a little more♥ Let me rest…♥ Ahh♥ Becoming a fool for your vagina…♥ So good♥”

    “Ah♡ Our puppy♡ Talking back again♡ Let’s just forget about being fools and ignore what others say, okay? Hmm♡”

    “So good…♥ Ahh♥ Ahh…♥ When I’m inside your vagina…♥ I can’t think of anything else♥♥”

    “Ah♡ Dojin, you’re my puppy♡ Even if you become a fool♡ It’s okay♡ Let’s live together forever♡”

    “No, no♥♥”

    “Hmm♡ What can’t be done♡ Ahh♡ Go away♡ You pathetic erection♡ Go away♡”

    “Hmm♥♥ Ahh♥♥♥”

    Squish squish squelch squelch!!

    “Ah♡ Your semen is hitting my uterus♡ I’m cumming too♡♡”

    I ejaculated almost simultaneously with Kim Ji-na.

    Just as I was breathing a sigh of relief that it was over,

    Kim Ji-na pulled her vagina off my penis with a ‘pop’ sound, then handed off the baton to Yi Ji-eun, who was masturbating with the small pink dildo.

    Yi Ji-eun immediately inserted her vagina onto my penis.

    Just when I thought I could rest, pleasure surged through me once again.

    “Ah♥ Huh? Why, why…? Why…?”

    “Ah♡ Why? Because this is a threesome, and you’re the lowest-ranked puppy and the only sub-canine, that’s why♡”

    Memories of being held captive and forced into submission for three days by the sex-crazed women came flooding back.

    …But at least they fed me and didn’t hit me, so it wasn’t too bad here….

    Kim Ji-na and Yi Ji-eun took turns using me as a living dildo.

    Technically, it was the sub-canine’s turn, but in the real world, I was being treated like a male sex slave.

    Just as a female sex slave in the real world would spread her legs and move her hips while offering her vagina, I, in this world of gender reversal, offered my penis and moved my hips while ejaculating.

    The two women took turns pleasuring me like a well-oiled conveyor belt.

    I kept moaning “Ah♥” as I climaxed, while they, without exchanging a single word, continued to pleasure me relentlessly.

    Eunji watched Kim Jina and me have sex, getting excited and then happily using a vigorous dildo to masturbate.

    Similarly, Kim Jina, when not having sex with me, would also get excited and passionately masturbate with a small pink dildo while watching Eunji and me engage in puppy play.

    Sometimes, when masturbating, they would kiss me or take my hand, guiding my fingers for a more intimate experience.

    I became a fool for their eyes only, continuously ejaculating and losing my mind in pleasure.

    Having a threesome like this, taking turns having sex, was something I desired, but it felt different from what I had imagined.

    They seemed happy together, and of course, I was happy too for the pleasure, but… something just didn’t feel right.

    “…Jieun, earlier, when Dojin entered, you immediately made a store, how did you do that? Oh, you can speak freely now.”

    “Oh, that? When you insert it into the vagina, you have to do it like sucking into the uterus…”

    “Uterus? Oh, you use the uterus? How do you use the uterus?”

    “The uterus? Oh, you use mana for this. Adjust the position of the uterus… and most importantly, the cervix is tough, so you have to widen it with mana and guide Dojin’s penis. It might be a bit painful at first, so coat it with mana and make a hole.”

    “There’s a 3D video related to this on the internet, do you want to see it?”

    “Yes, I want to see it too.”

    “Oh, but unnie, then how did you do that thing with your waist earlier?”

    Before I knew it, Kim Jina and Eunji were becoming close by sharing their sexual experiences and knowledge, complimenting each other’s bodies and boosting intimacy through mutual praise and grooming in sex.

    In the midst of it all, I was caught up in their excellent sexual guidance and the living, moving, and responsive biological dildos, falling into ecstasy.

    “Ah, ah, stop, stop, uterus sex, stop!”

    “Oh… you react so quickly like this?”

    “Yes, that’s right.”

    Damn it. Am I just an object to them?

    Now they’re not even pretending to listen to me.

    I continued to be used as a sex experiment, only to be slapped with ejaculate.

    And at some point, I think I passed out.

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