CHAPTER 17: [R-18] MY SHY STEPSISTER... IS A NYMPHOMANIAC?!

The inner courtyard of the fortress was bathed in a glowing red light, filtered by the setting sun. The cobblestone floor still bore the marks of dozens of spears driven into it over the years, like scars etched into the stone. My raspy breath echoed, my arms trembled under Aurelia’s weight, and every movement tore at my muscles. My sweat-soaked kimono clung to my skin like a second layer of skin.

— "You’re making progress..." Elyra said, her voice clear but softened by a wry smile. She spun her spear fluidly before driving it into the ground. "But you’re still too stiff."

I spat out a wry laugh, almost collapsing onto my weapon, which I used for support.

— "Easy for you to say." You don’t end up transformed into a bag of bruises."

She burst into a hearty laugh, shaking her silver hair, which clung to her damp forehead for a moment. She stepped forward, her light steps contrasting with the heaviness of my legs. Her shadow slid over me as she came to stand behind my shoulder.

"Maybe I should massage you after training?" she breathed mockingly.

I jumped in spite of myself. Her torso brushed against my back, her firm, heavy chest pressing deliberately against my shoulder blades. The heat of her body immediately penetrated the soaked fabric of my kimono. My stomach knotted, my breath caught.

"Wh... what are you talking about..." I stammered, but my hoarse voice betrayed me.

Her slender hands came up to grab mine to adjust my grip on the spear. Her warm skin slid against mine, her firm fingers guiding mine. She tilted her head slightly, her breath brushing my ear.

"Look... not like that." Her voice dropped to a lower, almost a whisper. "A spear is an extension of your body. If you stay rigid, it won’t live. I’ve told you that about 100 times. Let it breathe with you."

I gritted my teeth. Every word vibrated against the back of my neck, every pressure of her chest against my back drove me crazy. I could distinctly feel her hard nipples through the damp fabric, rubbing each time she corrected my posture.

"See?" She laughed softly. "Better already."

I spun a little too quickly, and our faces brushed against each other. A drop of sweat rolled from her temple to her parted lips. My eyes lingered there for a second too long.

Her smile widened.

"Are you blushing, Kaito?"

Fuck. I wanted to disappear into the ground.

Sweat clung to my skin, my raspy breath still resonating in my throat. Elyra finally stepped back, stabbing her spear into the cobblestone floor. Her gray eyes shone with an amused glint.

"You’re improving."

A smirk, then she added as she walked away,

"But tomorrow, I won’t be so gentle. Prepare yourself, Hero."

I stood there, my body covered in bruises, my soaked kimono fitting like a second skin. My heart was beating too fast, not just from the exertion. Her laughter still echoed in my ear as I left the grounds for the quarters.

The stone corridor still vibrated with the echo of my footsteps. The fortress seemed to have fallen asleep, swallowed by the silence of the night: only a few torches hung on the walls, a smell of metal and soot lingering in the air. My arms were straining, my shoulders felt heavy as lead, and I already had the idea of throwing myself fully clothed onto the straw mattress.

I opened the door.

The heat hit me immediately. A puff of damp steam rolled out of the room, carrying a scent of soap and jasmine. And in the middle of the fog... her.

Ayame.

Naked.

Her still-damp skin glistened in the flickering torchlight. Her enormous, heavy breasts dripped with droplets that beaded on their erect tips before running down onto her flat stomach. A fine mist enveloped her round hips, and I saw, miraculously clinging to her smooth skin, a sliver of dark lace stuck to her thigh, like a forgotten provocation. A trail of water slid between her thighs, splitting her brown hair before disappearing down her legs.

— "Aaaaah!"

Her cry pierced my eardrums. She desperately crossed her arms over her chest, but her breasts spilled out between her forearms, swollen, too heavy to contain. Her lower abdomen remained almost bare, glistening with steam. Her cheeks burned, her eyes widened.

My body reacted before my brain. A sudden shock exploded in my stomach, my penis immediately stiffened, swollen, painful against the sodden fabric of my kimono.

— "S-Shit!" I stammered, taking a step back. "Sorry!" I... I didn’t know—"

I slammed the door so hard that the door rattled again behind me. My back hit the icy wall of the hallway. I stood there, gasping for breath, my cheeks burning. But the image remained etched on my retina: her dripping breasts, the lace stuck to her hips, her pussy beaded with water.

From the other side, her furious, embarrassed voice echoed, muffled by the steam:

"Couldn’t you have knocked before you came in?!"

I closed my eyes, unable to calm my heart. Fuck.

A rustle behind me. I jumped.

"Nii-san?"

Hikari. She was standing in the hallway, her eyes wide open. She must have heard the scream. Her scepter clutched to her chest, her cheeks already red, she stared at me as if I’d been caught in the act.

I felt my stomach twist even more.

We decided to head outside afterward to chat a little about recent events with Hikari.

Once back outside, the cold bit my cheeks as we walked along the ramparts. The north wind blew through the stones, carrying a pungent smell of iron and soot. The torches set at regular intervals cast flickering halos that sliced the shadows into moving fragments. Hikari walked beside me, her arms clasped around her scepter, her ivory kimono flapping limply in the breeze.

I took a painful breath, my lungs slapped by the icy air.

"Hikari... about the other night... I’m sorry."

She raised her red eyes to me. For a moment, the flame of the torches reflected in her irises, making them glow like two damp embers. Her voice, soft but firm, cut through the silence:

"You don’t have to apologize, Nii-san."

I swallowed. She continued, a breath lower, her lips trembling slightly:

"We’re not related by blood. If it happened... it was meant to be."

My heart clenched so hard it hurt. My throat caught, unable to come up with a response. I looked away, but my cheeks burned more than the biting wind.

She slowed, hesitated, then stopped against the cold stone of the rampart. Her fingers trembled as she gripped the fabric of her kimono.

"Ever since that night... I’ve felt... strange."

Her voice broke. She bit her lip, her eyes misty. Slowly, almost in terror, she slid down a piece of her clothing. The silk parted, revealing the nape of her pale belly, then lower down... the glistening slit of her pussy, already damp despite the icy night.

I stood there frozen. The nearest torch cast a flickering glow on her slender thighs, pearled with night dew. Her ragged breathing made her chest flutter beneath the half-open fabric. Her nipples poked through the damp silk, betraying her feverish state.

"Nii-san..." she breathed, ashamed. "I’ve been hot... so hot since..."

Fuck. My lower abdomen exploded. My penis immediately tensed, swelling painfully beneath my kimono. I took a step towards her in spite of myself, my hands clenched, my breath short. Her pussy glistened, each drop glittering like a monstrous invitation.

I was only a finger away from giving in. Her trembling hand clutched my sleeve, her eyes bright with fever, begging me wordlessly.

But I pulled away abruptly, my jaw clenched, my head tilted back to catch my breath.

— "Here... if anyone sees us... it’s over."

My voice was hoarse, cracked with frustration. I gently pushed her away, my heart pounding like a drum.

— "I’m... too tired."

And without giving her time to reply, I turned away, almost fleeing into the cold corridors. Behind me, her parted lips were still trembling, and her half-open kimono let the forbidden dampness I’d just denied shine into the night.

Fuck. One more second... and I would have cracked.

Back at the dormitory, the room was plunged into a heavy darkness, punctuated only by the pale moonlight filtering through the shutters. Ayame was already asleep, curled up in her half-open kimono, one hand resting on her stomach, her swollen breasts lifting the fabric with each slow breath. Her warm scent filled the room.

Lying on my other side, I struggled to fall asleep. My screaming muscles demanded rest, but my head was still buzzing, full of images from the day: Elyra’s sweat, Ayame’s nakedness, Hikari’s hot breath. Every time I closed my eyes, I saw their skin, their gazes, their parted lips. My aching sex refused to calm down.

Finally, however, I fell into a deep, restless sleep.

...Until I was pulled from my dreams by a sticky heat.

Something was weighing on me. A light but burning weight, a damp pressure that chilled the back of my neck. My breath caught, my eyes shot open.

Hikari.

Naked.

Her frail, completely naked body dripped with sweat despite the icy air of the fortress. Her pale thighs trembled on either side of my waist, her hips undulated wildly as if she were fighting her own fever. Her breasts, still firm but already heavy, hung just above me, swaying in time with her desperate movements. But that wasn’t what took my breath away.

Her lips.

Red, wet, parted over my hard cock, which she swallowed in one stroke, all the way to the base. Her hot, tight mouth sucked me in like a suction cup, each thrust producing an obscene, slapping sound, a mixture of dripping saliva and nectar that already stained my balls. Her tongue danced wildly, swirling around my shaft, licking every swollen vein, pressing the tip with animal fervor before returning to swallow even deeper.

I gasped. My back arched, my fingers clenched on the sheets soaked with heat. She sucked as if she wanted to drain me of all my soul, alternating between brutal licks and deep throats where her mouth swallowed me until it hit my lower abdomen. Her nostrils quivered, her hollow cheeks gasped with saliva, and her eyes... damn, her eyes.

Red, wet, feverish, fixed on mine. The gaze of a hungry beast, an angel burned with desire. She didn’t blink, she stared at me, her tears sometimes falling with the effort, but never slowing down.

I heard her stifle a sob as she pushed me even deeper. Gleaming threads hung from her lips as she pulled away for a second, panting, her chin dripping, her mouth cracked with exertion. Her hot breath caressed the skin of my stomach.

"I... couldn’t wait any longer..." she whispered, her voice cracking, almost hysterical.

Before I could react, she plunged back in. Harder. Deeper. Her nails dug into my thighs to keep up with her insane rhythm, tracing red furrows into my skin. Her throat vibrated around my cock, her muffled moans sounding like pleas.

My heart exploded, my head buzzed. My loins screamed to give in, my will wavered with every slap of suction.

So my shy stepsister... is a fucking nymphomaniac?!