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Summoned as an SSS-Rank Hero… with My Stepmom and Stepsisters?!

iwanttosleep
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The average realized release rate over the past 30 days is 7 chs / week.
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Synopsis
R-18 Novel ! I woke up in a fantasy world. Sounds normal, right? Classic isekai stuff. Except… I wasn’t just any hero. I was given an SSS-Rank ability, a cheat skill beyond imagination. The problem? I wasn’t summoned alone. My stepmother and my three stepsisters were dragged into this world with me… and now we’re all stuck in the same party. Monsters, magic, dungeons, kingdoms at war… I could handle all that. But surviving daily life with my forbidden family? That might be the real final boss.
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Chapter 1 - Three Stepsisters, My Stepmom… and Suddenly, an Isekai?!

Every fucking morning, I stumbled on something that messed me up. Not porn, not some dream actress.

No. Always my stepsisters.

That day, half-asleep, I pushed the bathroom door without thinking. The hot steam hit my throat. And in that mist… I saw her.

Hikari. Naked.

Her back glistened under the water. Her black hair clung to her nape. Droplets slid slowly down her pale skin, gathered in the hollow of her back before running lower, between her round buttocks.She was leaning slightly forward. The angle was perfect. Forbidden. Brutal.

My heart stopped. My breath too. … And my cock, it stood up without asking my permission.

No. Fuck. Look away. She's your sister. Your fucking sister.

But impossible. My eyes were fixed. My whole body betrayed me.

— "F… fuck…" I whispered despite myself.

Hikari turned around suddenly, surprised. Her big brown eyes widened. Her breasts burst into my field of vision: full, heavy, the pink tips hardened by the cold water.

— "N-Nii-san!?" she screamed, a high-pitched note that tore my eardrums.

She grabbed a towel in panic, but her fingers slipped. The shower curtain tore and plastered against her. Transparent, molding every curve. It was worse than being naked.

Look away, bastard. Move.

I stumbled back, hand trembling on the handle.

— "Sh-shit! I… I'm sorry!"

I slammed the door and found myself in the hallway, scarlet red, heart pounding. My chest throbbed, my pants tight reminded me of what I had seen… what I should never have seen.

From the other side of the door, her furious voice rang out:

— "You pervert! Couldn't you knock?!"

I closed my eyes, ashamed, head against the wall.

I didn't want to… I shouldn't… but damn it, I'm a man. And every day, they push me a little more towards madness.

I tried to calm my breathing, back pressed against the hallway wall. My heart was still racing, my temples throbbing.

Breathe. It's over. Forget it. It was an accident.

— "Kaito?"

My neck stiffened. The voice came from my right.

Ayame.

My stepmother.

She came out of her room, dressed in her eternal silky kimono, white with discreet patterns. But the fabric had slipped off her shoulder, just enough to reveal the black lace of her bra. The perfect line of her breasts could be seen beneath.

I swallowed. Hard.

Don't look. She's your father's wife. She's your mother now. Stop.

But my eyes stuck there by themselves, as if pulled by gravity.

She approached, her step light, her smile gentle.

— "You're already up? You look pale…"

Before I could react, she raised her hand and brushed my forehead.

Her soft palm against my burning skin. Her perfume invaded my nostrils, jasmine and feminine warmth. A scent that clung, that burned.

I froze, unable to move. My mind screamed:She's your mother. She's your mother. She's your—

My body, though, only remembered one thing: the warmth of her fingers, the opening of her kimono, temptation within reach.

— "I-I'm fine, Ayame-san," I stammered, voice hoarse.

I stepped back sharply, but my back hit the wall. Trapped.

She tilted her head, her brown eyes narrowed by tender curiosity. Her dark hair brushed my shoulder. And me, I struggled not to give in to that insane urge to pin her against this wall and…

I inhaled violently, almost a growl.

Ayame smiled. A calm, gentle smile, but my brain immediately twisted it into something dangerous. As if she knew. As if she were testing me.

Then, without insisting, she dropped her hand and walked past me. The fabric of her kimono brushed my clenched hand.

— "Come down for breakfast. You need it."

Her silhouette slid down the stairs, swaying softly in the morning light.

I stayed nailed to the ground, throat dry, fists clenched.

Fuck… how am I supposed to hold out in this house?

The kitchen smelled of tea and hot miso. I tried to focus on my bowl of rice, but my mind still played the image of Hikari in the shower…

Bad plan. Because at that moment, Miyu appeared.

Denim mini-shorts, tank top too tight. She popped her lips, and leaned against the doorway, legs spread.

— "Ooooh, Nii-san… are you already drooling over our bodies??" she said with a hyena smile.

— "Shut up, Miyu," I growled, without raising my eyes.

Bad idea. She moved closer, leaned her body over the table to grab a fallen chopstick. Her chest swayed free, her sweet perfume hit my nose.

— "Tss, too easy to read…" she whispered, provocative. She locked her eyes on mine, a spark of challenge.

Ignore her. She's just an annoying brat. Ignore her…

But my heart was beating too fast. My cock was already straining against my pants.

I stood up abruptly, as if to flee. And that's when it happened.

Hikari.

In the hallway, clutching a towel against her, still red as a beet from earlier.

— "Uh… I… sorry about the shower…" she stammered, her eyes avoiding mine.

I wanted to answer, but she tripped on the rug. Her body slammed into mine. Her hands grabbed my shirt, her breasts pressed against my chest, and her face stopped just inches from mine.

Her hot breath brushed my lips. My brain exploded.

Move, Kaito. Look away. She's your sister. Your sister !!

I stayed frozen, stiff, unable to step back.

— "Hikari! Be careful!" I blurted, voice strangled.

She stepped back immediately, panicked, and bowed clumsily before rushing upstairs. Her pale thighs disappeared under the fabric of her too-short dress.

I put my hand on my face, trying to catch my breath.

And then, as if to finish me off… Reina.

She slowly came down the stairs, upright like a queen. Each step resounded, solemn. She stopped in front of me, her icy eyes scanning my body from head to toe.

— "You look pathetic, Kaito. Can't even stand properly?"

Her words were blades. But when she sat elegantly on the couch and crossed her long legs, the fabric slid up just enough to reveal the smooth curve of her thigh.

I looked away, but too late. My heart exploded again.

I finally decided to run away from all this mess.

I slammed my bedroom door so hard the frame shook.Silence fell, just cut by my ragged breath.

I leaned back against the wood, legs shaky. My whole body trembled.

— "Fuck…"

The images replayed in my head, like a film on repeat: Hikari naked in the shower, Ayame so close her perfume intoxicated me, Miyu and her provocative chest, Reina and her queenly legs…

I groaned, punched my pillow.

— "Shit! Shit! Shit!"

I collapsed on the bed, sprawled like wreckage, arms spread. My pants squeezed me breathless. I closed my eyes, ashamed.

I am pathetic.

I had sworn to see them as family. As sisters. As a mother. But every day, my eyes, my hands, my damned body betrayed me.

I don't want to desire them. I must not.

And yet… I wanted them.I wanted all of them.

A bitter laugh escaped me, nervous.

— "At this rate… either I become a monk, or I snap… I absolutely need a way out!"

I buried my face in the pillow and groaned like an animal in heat. My body burned, my chest hammered. Between guilt and desire, I was consuming myself.

I stayed there, short of breath, until the air in my room changed. A shiver. A heavy, suffocating weight.

I raised my head.

In the middle of the floor, a circle of light burst open, blinding.

— "Wh… what?!"

The runes shone, and before I had time to react, the light swallowed me whole. My body was ripped from the bed, thrown into the void.

I suffocated. The light devoured me, tore me from my bed.Then, nothing. Silence.

When my eyes opened, I was kneeling on an icy floor. White marble. Not my room, not my prison.Around me, white-robed priests chanted. In front of me, a golden throne. And on it… a king, gray beard, solemn gaze.

— "Welcome, Hero. You are destined to save our world."

His voice echoed in the immense hall.

A magician stepped forward, holding a glowing scroll.

— "Welcome hero, you have been summoned to save this world."

I froze. Then… a dry laugh escaped me. Dry, nervous. Then uncontrollable.

— "Ah… ahahahaha… finally!"

I pressed my hands to my face, shoulders shaking.

— "Fuck… finally an exit! Finally I'm free of that house, of that forbidden harem…!"

My heart pounded like crazy. For the first time in two years, I breathed.

But.

— "Onii-san…?"

The voice. Soft. Behind me.

My whole body froze. My laugh snapped. Slowly, I turned my head.

They were there. Ayame. Miyu. Hikari. Reina. Still wrapped in the glow of the ritual, dazed, but very real.

My eyes widened. My jaw tightened.

— "…You've got to be fucking kidding me."

The king continued his speech, the priests prayed. Me, I heard nothing. Just the roar of my own despair.

Even in another world… I'm doomed to die surrounded by them.