Chapter Index

    .

    Hyperventilation.

    Rather than dispelling the numbness from breathing too hard, I pull my cock out of Baek Seo-yeon’s still-clinging pussy.

    Ecstasy.

    I can’t think of a better word to describe this feeling.

    To be honest, it’s not like I’m corrupting some naive hero—my usual type—nor is she a villain worth defiling.

    If I’d been fucking her raw all this time, maybe, but with a condom so tight it’s uncomfortable, there’s no way this sex could be satisfying.

    And yet, this is mind-numbingly euphoric, probably because—

    “Hah…, haaah……. …Nghhk…….”

    —it’s Baek Seo-yeon.

    The same girl who used to snap at me, saying she hated dirty things, now trembling against the wall, thighs quivering as she waits… It’s because it’s her.

    There’s no other way to explain it.

    …If you ask me why, I don’t fucking know either.

    I’ll have to rack my brain—what’s left of it before it turns to ash—to figure it out.

    “Huu….”

    I toss the condom, now heavy from cumming deep against her cervix, onto the floor.

    Grabbing a new one from the box a few steps away, I tear open the gray wrapper and return to Baek Seo-yeon.

    My body’s a bit sore from cumming twice in a row, but I don’t want to waste time on something so trivial.

    This is the only time—well, half the time—she’s honest, so I want to defile her as much as possible now.

    Once lunch break is over, I can rest all I want.

    There’s a saying, isn’t there?

    You can sleep when you’re dead.

    “…Ah, fuck. Even putting this on is a pain in the ass….”

    Holding her sweaty ass with one hand, I roll the condom down my cum-smeared cock with the other.

    The size is off, and my dick’s already sticky from multiple rounds, making it hard to slide on quickly. But with enough force, I manage to get it on.

    Still, something about it…

    Honestly, if we fuck like this, the condom might slip off… or so I thought.

    …That worry lasted about three seconds.

    In the end, I brushed it off.

    Like before, my brain’s too fried to care about every little thing.

    “Hey. Baek Seo-yeon.”

    “Be… quiet…….”

    “How much quieter do you want me to be?”

    “……”

    “…Anyway, tiptoe. Just a little.”

    “……”

    “…Good. Like that.”

    She only glares at me sideways, offering no real resistance.

    Watching her hesitantly rise on her tiptoes against the wall, I grip her ass with both hands and spread her open before starting to piston into her again.

    …Her cherry-blossom-colored pussy and asshole, so clean it’s almost unreal, twitch under the fluorescent light.

    I didn’t think much of how tightly closed she was the first time, but even after multiple rounds, she’s still like this—it’s a little strange.

    Is it a sense of superiority?

    The fact that I’m the only one who gets to see this sticky, pink flesh—something even the student council vice president, who used to trail after her like a lost puppy, never got to see.

    Pressing my thumb against her wetness and spreading her wider, I push my swollen cockhead into the tiny gap that’s barely formed.

    …Should’ve left my phone nearby.

    Watching my thick cock sink into her tight, pink slit—one that looks like it’d struggle to take even a finger—isn’t something you see every day.

    “Ngh… hhk……. ……Ha….”

    “…You’re the one who needs to keep it down, no?”

    “If you’re going to… say that…. Hand me the pillow… I was biting earlier….”

    “You’ve got something just as soft. Don’t you remember what I told you?”

    “…”

    Pull out that white fox tail and bite it instead.

    When I remind her of what I said a minute ago, Baek Seo-yeon’s sharp eyes turn toward me.

    …Not that it matters. Drenched in embarrassment as she is, I don’t feel even a hint of fear.

    I press down on the small of her back, pushing her closer to the wall.

    And at the same time—

    “Hii… hk……?”

    The cockhead I’d barely pushed in

    plunges deep inside.

    All at once.

    “…If you’re that loud, even Yoo Si-woo might hear you.”

    “If he… hears…. Then stop….”

    “Yeah. Spit it out. Be louder.”

    “…Psycho bastard….”

    “Not a psycho…, huu…. I just wanna brag to the guy beyond the wall that I’m fucking you.”

    “You might not… care……. Ngh…. But it’s… embarrassing for me….”

    Of course, I don’t actually want her voice to leak out.

    Even if I had that kind of kink, I’m too possessive to let other guys get years’ worth of fap material from my woman’s moans.

    But I’m provoking her like this to set the mood.

    Rather than fucking her senseless in a soundproof room and parting ways,

    doing it like this—where she can’t even make noise freely—makes it more likely there’ll be a next time.

    …Plus, as an added bonus,

    “…If you don’t want him to hear, bite down on that fluffy tail.”

    “……Trash….”

    “Ah, that’s a word I haven’t heard in a while. Sounds like something from elementary school.”

    “Shut… up…….”

    I get to see that adorable side of Baek Seo-yeon again—the one she never wants to show.

    “…Eyes. Can’t you… close them for a second…?”

    “They’ll pop up in an instant anyway. Disappear just as fast.”

    “……Haa….”

    …I’m not an idiot.

    Seo Woo-jin, who was just using a pillow earlier, is now fixated on my tail.

    I can guess why.

    Everyone online says the same thing.

    Whenever a gumiho is mentioned, it’s always about how they’re breeding material or fuckable until they’re pregnant—disgusting posts beyond counting.

    So this guy’s doing this because I’m a gumiho.

    …He’s not the type to blab about sleeping with me, but

    he probably wants to brag about fucking a gumiho.

    At the very least, he wants to take that kind of memory with him.

    “…….”

    So if I just

    play along once, maybe he’ll stop.

    …Aside from the embarrassment of showing it to others,

    it’s not like it’s difficult.

    It’s not like I’ll become more sensitive or anything…

    Not really, anyway.

    If today’s the last time I’ll ever be involved with Seo Woo-jin…

    …If we never have sex again.

    Wouldn’t it be fine?

    “…Done?”

    For a moment, I flinch as his cock presses against where it shouldn’t.

    With the other side of the wall quiet, I relax slightly and carefully reveal my fox ears and tail in front of his eyes.

    “They look smaller than last time.”

    “Back then, I had to show everything… Now, there’s no need….”

    “Why?”

    “…It’s embarrassing.”

    “If you only show a little, is it less embarrassing?”

    “……Why does it matter how I feel…?”

    Especially the tail—aside from the one I’m using to cover my mouth, I’ve shrunk the other eight.

    Sure, embarrassment accounts for 99% of the reason, but it’s not the only one.

    …If I showed them at full size and Seo Woo-jin grabbed one out of curiosity…

    That’d be trouble.

    “…Just in case, don’t grab my tail.”

    “I know. It’s sensitive.”

    “…Good.”

    Most people don’t know this, but for mutants, tails are more sensitive than you’d think.

    Not in a sexual way—they’re just more sensitive to pain.

    I’ve seen adult videos where people carelessly grab or even pull them during sex.

    I don’t know about other mutants, but for me, that’s a no-go.

    …I tried it once before…

    Light touches are fine, but

    when I squeezed it out of curiosity,

    it hurt way more than I expected.

    Enough to make my legs go weak.

    “…….”

    That said, I’m not sure if biting this fluffball is okay—but thankfully, it doesn’t bother me.

    The only issue is how mortifying it is with Seo Woo-jin staring at me from behind.

    “…Mmph….”

    But one way or another, everything’s ready.

    I’ve shown my ears and tail like he wanted, and the other side of the wall is quieter than expected, so it’s best to finish quickly.

    Maybe Yoo Si-woo left during the earlier assault on the bed, but there’s also a chance he’s just staying quiet, so I’ll have to keep my voice down as much as possible.

    Just endure this one last time.

    Then this treatment—something I never wanted—will finally be over.

    So as I bite my tail and glance back at him, he starts moving his hips in slow, smooth thrusts.

    “……Nghhk…, …kuh….”

    After pulling out the cock that had been stretching me open deep inside,

    slowly. Slowly.

    He presses against my soaked walls, reaching all the way to where he’s trained me to be soft and pliant,

    then pulls back out.

    I gulp, tense from expecting him to slam back in like before—

    but he slowly pushes back in,

    …then leisurely pulls out again.

    For someone who claimed he wanted Yoo Si-woo to hear,

    his thrusts are oddly monotonous.

    Not that it doesn’t feel good, but…

    It’s like he’s holding back when he could make it feel even better.

    Not that I’m complaining.

    It’s just… uninspired sex.

    That’s all.

    I swear on my conscience—

    this isn’t unsatisfying.

    Absolutely not.

    “Mmph…, mm……. Nn, hhk….”

    …Anyway. Why is he doing this?

    Didn’t you say you wanted Yoo Si-woo to hear me moan?

    Then shouldn’t you be… pounding me hard enough to hit my pelvis?

    Shouldn’t you be gripping my hips and fucking me like an animal, forcing sounds out of me?

    So why this sudden… gentle sex?

    If you’re doing this to win me over, let me save you the trouble—my opinion of you is already in the negatives.

    Besides, trying to earn favor like this is just laughable.

    If you think I’m tired from earlier and need a break,

    let me remind you—you’re the last person who’d ever be considerate.

    …I just don’t get it.

    Even the sex on the bed earlier was rough, like mating.

    So why is he being so nice now?

    “…….”

    A little roughness…

    wouldn’t hurt.

    “…Hihhk….”

    A minute passes as I grind my teeth on my tail.

    Seo Woo-jin’s movements remain unchanged, with only slight variations.

    He drags his cockhead along my walls, then pushes back in deep and lingers.

    If he’d just fuck me hard enough to press my ass into the bed, I wouldn’t be able to hold back my moans—but instead, he leisurely pulls out, scraping my slick walls, then slides back in halfway.

    …At this point, I’m the one getting worked up first.

    Not because I’m some natural pervert like Seo Woo-jin, but because the constant stimulation is… unavoidable.

    But if I show it, shame will be my downfall again.

    Should I outright tell him to stop playing around and fuck me like before?

    Or maybe move my hips myself? Like some whore?

    Both options are immediately vetoed in my head.

    So instead of being honest, I choose another approach.

    “…Mmmph… Hey….”

    “What?”

    “……If you keep this up… Yoo Si-woo won’t hear anything….”

    “…”

    …Ah, a slight reaction.

    His cock is so big… that even the smallest twitch is noticeable.

    It’s filling me so completely that I can’t miss even the tiniest movement.

    But that doesn’t mean he starts slamming into my cervix like before.

    Instead,

    he whispers a teasing question in my ear.

    “Isn’t that better for you?”

    “……”

    …He’s right.

    But answering that honestly is impossible.

    And with that remark, one thing becomes clear.

    …Seo Woo-jin.

    You’re doing this on purpose.

    Trying to bait me into saying go harder or some other nonsense.

    “What? Not satisfied with this?”

    “……”

    I’m not.

    You could make me feel five times better, but you’re stopping at 20%, giving me just crumbs—it’s infuriating.

    “So you do want this kind of sex, huh?”

    “…Nn, hih…?!”

    That hatred—

    the shameful frustration of being denied pleasure—

    melts away like spring snow under the light bumps of his hips.

    …Just moments ago, I was being taken like an animal.

    And now, a single playful thrust

    is all it takes.

    Even now, all I can do is bite my tail and stifle my moans.

    …Then what if you really took me?

    Not just lightly bumping against my cervix,

    but truly—

    like you’re trying to ruin me.

    …Could I even hold back my moans?

    Even now…

    they’re slipping past my lips.

    “Hey. Baek Seo-yeon.”

    “Haaah…, hahk…….”

    “Stop trembling over a little hip movement and look at me.”

    “……Ngh….”

    As I pant through clenched teeth, still biting my tail, Seo Woo-jin grabs a fistful of my hair and yanks me toward him.

    It’s such a childish move that it irritates me,

    but at the same time,

    a strange excitement slowly seeps into my mind.

    “Look.”

    “……”

    …A very peculiar kind of arousal.

    Just from having my hair pulled,

    my back tingles—

    a completely unfamiliar excitement.

    Could my body have learned to find anything Seo Woo-jin does pleasurable?

    Is that… even possible?

    Worried my expression might give me away, I frown and glance back at him.

    “Spit out the tail and say it. Are you satisfied with this?”

    “……. ….”

    “…You’re not. Any of the sex we’ve had so far would feel better than this.”

    “……”

    …He’s not wrong.

    The first time he touched me in the infirmary.

    The day I lost my virginity after getting caught masturbating in the bathroom.

    Even the sex we just had.

    All of it was miles better than this lazy, obscene noise-making.

    But the problem is…

    Yoo Si-woo.

    “…Can you hear anything from the other side?”

    “…”

    Yoo Si-woo.

    “…Given the time, don’t you think he left during our earlier session?”

    “…”

    Yoo Si-woo.

    “Listen carefully. Hear anything else?”

    “…….”

    …The sound of fabric rustling.

    Faint, but there.

    “…No….”

    “Right?”

    My mouth

    betrays me.

    “Hah, hah…. S-So…, suddenly……. ….”

    “…What? You said no one’s there.”

    “That’s, not…….”

    “Is she still there? Yoo Si-woo?”

    “………Dunnooo….”

    Even as Seo Woo-jin grips my hips and starts fucking me in earnest,

    even as I fail to bite my tail and instead spill shameless moans,

    …unlike me, who’s trying to stay quiet for the sake of the future,

    he

    has already surrendered to this cheap pleasure.

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