Chapter Index

    .

    A hazy vibration.

    Sweet moans.

    Stifling, humid air.

    Amidst it all, I brush back the damp strands of hair clinging to my skin,

    then drag my unfocused gaze downward.

    …Her ass, flushed red from relentlessly slamming against my pelvis, is now firmly gripped in both hands, kneaded until pliant.

    Watching the quivering rim of Han Soo-ah’s entrance as she teeters on the edge of climax, I pull my hips back, slowly withdrawing my cock from the slick, clenching walls devouring it.

    “Hah… ngh…!”

    “…….”

    …Tch, fuck.

    Even as my cum drips thickly between her thighs the moment I pull out,

    even as my gaze lingers on her trembling legs, barely holding herself up—

    what really catches my eye is this.

    My cock, still rock-hard, veins bulging as if ready to burst.

    Logically, after emptying myself inside her a few times already, I should be running low.

    But as if mocking the idea, my body feels unnervingly energized, like it’s demanding nothing but to keep fucking.

    Did I eat something weird?—Not that I can recall.

    The only things that come to mind are the kind of ridiculous old wives’ tales that’d make geezers snicker.

    Dismissing the pointless thoughts, I lightly tap Soo-ah’s soft ass and part my lips.

    “Soo-ah. You okay?”

    “…Feels… good…….”

    “I asked if you’re okay, dummy.”

    “…Ehe, I think… I’m okay….”

    “…Then, can I keep going? …Teaching your sunbae.”

    “….”

    Soo-ah glances back at me, her dazed eyes meeting mine before she nods.

    Then, pressing herself closer to the wall—forehead and chest flush against the tiles—she waits for me.

    …Unlike before, when I was pounding deep inside, maybe she wants me to focus on grinding against her lower stomach this time.

    Assigning meaning to something Soo-ah might’ve done without much thought, I adjust my stance.

    Exhaling roughly, my chest visibly rising and falling, I shift to the side.

    Positioning my cum-smeared cock beside her, I slide a finger into her dripping entrance, where my release is still oozing out.

    “Ngh…!”

    “…Let’s scoop some of this out, yeah?”

    “Y-yeah…….”

    …At the same time, with my free hand,

    I point to my cock, glistening with a mix of her arousal and my cum—

    as if inviting someone to see.

    “…Seonsaeng-nim….”

    “…….”

    Squelch, squelch.

    Beneath the sweet spill of Soo-ah’s voice,

    I muffle the sound of approaching footsteps.

    “…….”

    Unaware of the fingers plunging deep inside her, Soo-ah moans in bliss.

    Meanwhile, the sunbae who’d fretted over her just hours ago, worried she might be in pain, now uses her mouth like tissue.

    …If it were just my cum, maybe. But it’s mixed with another woman’s slick.

    Judging by the way she glares up at me, brows furrowed, she’s clearly not thrilled.

    Yet she offers no real resistance, bobbing her head back and forth obediently.

    And where her mouth can’t reach, she licks clean with her tongue.

    Probably trying to bind me with an unspoken debt.

    Since I’m licking even this without complaint,

    you better give me something equal in return, Seo-jin.

    A transaction.

    “…….”

    “…Ah, wait… from the… start…, so… deep……♡”

    …If that’s the deal, I’m more than willing.

    Patting Baek Seo-yeon’s head dismissively after her thorough cleanup, I ignore her irritated glare and press against Soo-ah.

    So I can thrust my cock, still wet with Seo-yeon’s saliva, deep inside.

    So I can grope these dangerously addictive tits from behind.

    “There, …ngh, no… no….”

    “…I’ve memorized the spots you like.”

    “Don’t… remember… or I’ll… cum first… again….”

    “You always do anyway, so what’s the difference?”

    “But… Seonsaeng-nim… won’t it… be less fun… with me… than with Yozora…?”

    “…….”

    …Just last year, she was 19.

    A normal high school senior.

    Every time I see her face, I’m reminded of that cigarette-loving delinquent,

    but unexpectedly, her innocence is intoxicating.

    So I sink my teeth into the burning red shell of her ear.

    “So, you feel sorry for me?”

    “Sorry… ngh, …I’ll do… better……♡?”

    Wrapping my arms around Soo-ah from behind,

    thrust, grind,

    I prod at the deepest, most sensitive spots inside her.

    Even as she apologizes, she’s already climaxing again.

    Pinning her against the wall,

    slap, slap, slap,

    I fuck into her hard enough to make her ass jiggle.

    …It’s a shame her chest is pressed flat against the tiles, out of reach,

    but then again,

    the way her tits bulge from the sides is fucking hot.

    “You said you’re sorry, …Soo-ah.”

    “Ah, w-wait, …ngh, …ahhh…!”

    “Stop squeezing me for cum if you’re really sorry.”

    “I was… wrong……♡”

    Ignoring Seo-yeon’s stiffened pink nipples just beside us,

    I wait as Soo-ah’s walls clench around me, squelch, squirt, milking my cock.

    Once she’s calmed slightly, I grip her shoulders,

    pulling her trembling body tight against me,

    and imprint the shape of my cock deep inside her molten heat.

    “If you’re sorry, hold it in.”

    “Hah… ngh…!”

    “Hold back your climax. Until I cum.”

    “Th-that’s… ah, …ngh…….”

    A kiss that tastes like shower water.

    I twist Soo-ah’s head toward me, sharing a messy, moodless kiss before letting her go, our saliva stringing between us.

    Then, pressing down on her back to lower her stance,

    squelch, squelch,

    I fuck into her dripping pussy, as if mocking the idea of repentance.

    “And… ngh… you stopped explaining to your sunbae.”

    Her walls, already writhing from one climax,

    clench around me tighter than ever as I fuck her with a cock harder than usual.

    “Sun…bae… this… haah…….”

    “….”

    “Feels good… so good….”

    Hearing the same simple, straightforward explanation she’d given earlier,

    I pant heavily,

    pushing Soo-ah to the brink with my throbbing cock.

    “I already told you. Earlier, when we first had sex.”

    “Uh… uh… ngh…….”

    “Don’t you remember? When Yozora taught you?”

    “Yozora… hah… taught… me….”

    What spills from Soo-ah’s lips next is,

    absurdly,

    “Seo-yeon sunbae… Seonsaeng-nim said…”

    “…Said what?”

    “To make your cock hard… arch your pelvis….”

    Not something Yozora said—

    but something I had told Yozora.

    …Not about how sex feels,

    but about how to make me hard.

    “When Yozora did it too… you told her… to lift her hips more…….”

    This whole situation only happened because Soo-ah’s so naive.

    No matter what she says, no matter how things unfold, it doesn’t really matter.

    …Except.

    One thing bothers me slightly.

    “Mine’s… ngh… naturally… wide…….”

    “….”

    “So even if I don’t… …you still get hard… right?”

    For the first time,

    her voice, always so innocent,

    carries a hint of smug superiority.

    “…Ngh, Seonsaeng-nim…….”

    Hearing that,

    I—

    “Ah, ngh… w-wait… ah, s-slow… ……♡”

    —pull her into my arms so tightly

    she doesn’t even need the wall for support,

    and fuck her like I’m devouring her.

    Like it’s our first time.

    …With frenzied excitement.

    Slap, slap, slap.

    Even as the bathroom echoes loudly, I don’t stop.

    The promise I forced on Soo-ah—to hold back her climax until I cum—

    is broken without hesitation.

    Having already emptied myself to the last drop earlier,

    I somehow refill my balls to the brim,

    spurt, spurt, spurt,

    painting her white.

    …Once the plug is pulled, it’ll all spill onto the bathroom floor anyway—

    nothing but thick, sticky paint.

    “…Hehe, sunbae… look at this…….”

    “…I see. It’s leaking so much.”

    “Seonsaeng-nim… hah… my body… …got you really hard, right…?”

    “…Yeah. When you came on my chest earlier, it was only half this much.”

    “…Hehe…….”

    …Before openly mixing with Seo-yeon,

    there’s one way to make Soo-ah happy.

    “…Ah, then sunbae… wanna try too…?”

    “….”

    “With Seonsaeng-nim… …sex….”

    “….”

    “If you’re scared… I can go again….”

    “…I’ll try. Once.”

    Because there’s

    no better way than this.

    …Huh?

    Wait, that’s Yozora.

    Why’s she here alone?

    And with a shopping basket…?

    “What? A friend of yours?”

    “Shh…! Shut up, what if she sees us…!”

    “So what? You told your academy friends you have a boyfriend.”

    “No, it’s just… running into someone here is so fucking embarrassing…!”

    “Here of all places? We’re grown adults….”

    “Hey!”

    “…Fine, okay. I’ll shut up, yeah? Your friend’s cute.”

    “What?”

    “You said to shut up.”

    “…Yeah. Just watch what she’s buying quietly….”

    “Eugh, creepy….”

    “Shut up…!”

    After smacking my chattering boyfriend,

    I duck my head under the stares around us and glance back at Yozora.

    Now that I think about it, she suddenly had a hickey before.

    When our friends asked, she said she had a college boyfriend or something…

    Is he nearby even though she’s alone now?

    As I stealthily watch,

    “…….”

    I’ve seen them before,

    but seeing an item I’ve never bought or used in Yozora’s basket

    makes me blush slightly.

    “…That her taste? Your friend?”

    “Hey, what the hell, why are you looking too…!”

    “You told me to shut up.”

    Truly, Japan.

    The land of culture.

    We share the same thought.

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