Prologue: 13 September, My Scar

Translator: Soafp

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A cold room dominated by blackness and silence.

Right now, I am trapped in such a desolate space, with nothing and no one around.

There is no clock or window in this room, so I have no idea about the outside world or the exact time. I am completely cut off from the outside.

I can’t eat properly, and I can’t even use the restroom. How much longer will I be confined in this seemingly endless room? Will help ever come? These anxieties swirl in my mind, causing a sense of madness with each passing moment.

Endless self-doubt, a seemingly eternal time.

AAH… PLEASE, GET ME OUT OF HERE…!

Nee-san!!!

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Yes, the person responsible for locking me up here is none other than my step-sister.

Ten years ago, my parents were killed in a traffic accident. Fortunately, I survived, but I was only five years old at the time. It was nearly impossible for me to live on my own. Seeing this, a longtime acquaintance of my father, the Kimisaki family, took me in as their adopted child.

The Kimisaki family consists of six members, with four sisters.

The eldest of those sisters is the one who locked me up here,

Maya Kimisaki.

We had built a completely normal and happy family, even though we weren’t related by blood.

However, at some point, my sister began showering me with a level of love that bordered on trauma… I could even call it madness.

It started innocently enough, with her sitting close to me during meals, but it escalated to the point where she would feed me directly.

I’m not insensitive to other people’s feelings, especially when they’re directed towards me, so I understood that my sister had romantic feelings for me…

But I could only see her as my sister. Even though we weren’t biologically related, I had spent ten long years thinking of Maya Kimisaki as my sister, and that perception couldn’t change now. It was impossible for me to suddenly see her as a romantic partner.

However, my rejection didn’t deter her, and her love for me continued to smother me.

And now, it has come to this.

I was probably drugged and then confined in this empty place.

I was beginning to dislike my sister…

When did we stop being just siblings? We used to be so close, just an ordinary family…

Why did it come to this?

Clang!

As I was lost in thought, the door suddenly opened.

Did someone come in?

Has help finally arrived?

I couldn’t speak because I had a gag in my mouth.

So, in an attempt to get the attention of the person who opened the door, I jingled the handcuffs on my wrists.

And the figure moved closer.

Did they notice?

Will I finally be saved?!

With a glimmer of hope, I stared at the approaching figure.

The figure kept getting closer.

“Fmm fmmm!”

I desperately sought help.

And the figure arrived right in front of me.

“Fmm!”

Finally! They noticed!

I’m saved!

“So, you’ve been waiting for me so passionately, Yuran…”

“Fmm…?”

Aah… This is the worst.

In my entire life, I’ve never experienced a moment where hope turned into despair like this. And I can confidently say that I will never experience a despair greater than this in the future.

The person behind the figure was not someone coming to help me; it was the one who locked me in here.

My sister, Maya Kimisaki.

Clang!

My sister removed the gag from my mouth and gazed at my face with a seductive look in her eyes.

Her captivating black eyes, which could bewitch anyone who looked into them, and her long, artistically beautiful black hair that fell slightly over her eyes, now seemed somewhat bothersome.

“Ha… Ha… Nee-san… Why are you doing this?!”

I questioned my sister. Why was she doing something like this? Why did she lock me up like this?

“It’s obvious, isn’t it, Yuran?”

“?”

“Because I want to be with you.”

“…..Ha?”

My sister had locked me up here to be with me… To satisfy her own desires, she had imprisoned me here for days. She didn’t care about me or my feelings at all. My sister was… insane.

“Nee-san… This is insane.”

“Insane? How?”

“! How? It’s obvious! Locking your brother up in a place like this… It’s absolutely insane! It’s not normal! You’re crazy!”

I let my feelings out.

I wouldn’t hide them anymore. I’d confront my sister with all the emotions I had for her.

I thought that maybe she would understand, and we could return to being a happy family…

“You’re cute when you get angry like that, Yuran.”

“Ha?”

My sister said something I never expected.

“That’s how I like to see you, all fired up.”

“What are you talking about?”

“I love everything about you, Yuran. But if we’re not together all the time, I can’t see all those expressions.”

“…”

“So let’s be together, always, just the two of us in this room, forever and ever.”

“Wait… Does that mean I’ll never get out of here?”

“Why not? Yuran, you love me, and I love you. Isn’t it a kind of happiness for two people who love each other to be together forever?”

My sister was genuinely insane. She had a perception that I loved her as a romantic partner, not as a sister. While I did love my sister, it was a familial love, not a romantic one.

Had she watched too much anime or something?

My sister had become someone I didn’t recognize, not the kind, intelligent, and athletic sister I had once looked up to…

“Why… did you turn out like this, Nee-san?”

“?”

“I… I used to admire you so much because you were kind, smart, and athletic, but now you’re just…”

“I’m still the same as always.”

“…”

“Even now, I’m thinking only about you, Yuran. I’ve always been thinking about you.” (Maya)

“I studied and excelled in sports to make sure you wouldn’t be laughed at because of me. I expanded my social circle and interacted with people I didn’t want to associate with, just to improve my relationships for your sake. I dirtied myself for your sake. I thought it would all be for you.” (Maya)

“Nee… san…”

“I’ve been living for your sake, Yuran.”

The truth revealed by my sister. The admiration I had for her had originally been built for my sake.

“But… you’re not living for my sake…” (Maya)

“I don’t know what you mean.”

“What is the meaning of this?”

My sister took out a smartphone from her pocket and skillfully unlocked it.

Upon closer inspection, I realized that the smartphone my sister was holding was… my smartphone.

How did she know my passcode…

She then presented the smartphone in front of me.

The LINE chat screen was displayed on it.

The chat was with a female classmate.

“Why are you talking so friendly with other girls?”

“We’re just talking because they’re classmates.”

Guts!

My sister’s hand gripped my face.

“Yuran… You belong to me. It’s okay if you talk to your sisters, but getting friendly with other girls… That’s unacceptable.”

My sister glared at me with an intense fierceness.

The distance between her eyelashes and mine. Her black eyes were no longer “beautiful” but were filled with hatred, jealousy, contempt, and various other sinister emotions.

“Gga…!”

“I own you, and you own me.”

“Gaa… Haa… Haa…”

“I have to make sure you understand that.”

My sister released my face, and then, with a messy yet sensual motion, she took my lips.

1 second…

10 seconds…

30 seconds…

Our lips naturally met as if it were destiny, and an overwhelming, sensuous stimulation flooded my senses. It was a sensation that threatened to drive me insane, standing on the brink of despair.

“Mmm”

As I teetered on the edge of despair, my sister, who had unreasonably stolen my lips, seemed to revel in a blissful light I had never seen on her face before.

And when she appeared satisfied, she parted her lips from mine.

“Hey, Yuran…”

“…What?”

“Earlier, everyone went looking for you. I told them you were staying at a friend’s house, but it’s been four days already. Even if you were staying there for a maximum of two days, they’ll come looking for you, right?”

“…!!”

Suddenly, my sister revealed the truth.

So, the story was that I was staying over at a friend’s house… That’s why no one was looking for me. And it had been four days already…

“Fufufu, but what’s amusing is that you’re in my room right now. No matter how much they search outside, they won’t find you here.”

“…!! Your room?”

This was my sister’s room? I had thought it was some kind of desolate place because of how grim it was.

“And now, there’s no one at home.”

“…Yeah.”

“Right now, Yuran, we can do anything we want, and no one will notice. No one will ever think that you’re here.”

“What… what do you intend to do…?”

“That’s why there’s no better time than now.”

“No better… time?”

My sister hugged me, licked my neck, and murmured in my ear in a bewitching voice.

“—Let’s do it.”

“Ha?”

“Let’s confirm our love, connect, become one.”

“No! That’s! We’re siblings, you know!? Nee-san!”

I rattled the handcuffs, desperately trying to convey my refusal.

To engage in such acts as siblings… it was unthinkable, unacceptable.

But the only sound that echoed was the dry clinking of metal, and it seemed like it fell on deaf ears in my sister’s heart.

My sister didn’t stop.

“Yuran…”

“I don’t want this… Please, Nee-san…”

“I love you.”

The words that came from my sister felt like a curse, as if they were some incantation.

---

A full moon illuminates the dark night sky on a September night.

…My everything had been violated, loved, and taken away by this person.

When it was all over, I was completely worn out.

In contrast, my sister had an expression as if she had obtained all the happiness in the world.

Then, she suddenly took out my smartphone from her pocket.

“…Nee-san…?”

“Let’s show everyone how we loved each other.”

“Wha!!”

My sister unlocked my phone with terrifying speed.

To my horror, everything between us had been recorded on this smartphone.

“DON’T… PLEASE STOP… STOP!”

I tried to grab the phone, but I couldn’t with the handcuffs on my wrists. I could only hear the clinking of metal.

“Nee-san!! I’ll do anything…!! Just please…!!”

“…Noo~”

My pleas fell on deaf ears as my sister completely ignored me. With a sinister smile, she sent the video of us to all my friends on my LINE.

“AH… AAAAAHHH?!”

I screamed in despair, unable to find words to express my agony.

Ignoring me, my sister dropped the smartphone on the ground and then straddled over me.

With another sinister grin, she whispered,

“Let’s do it again… Show that girl what she’s missing…”

The smile on her darkened face resembled that of a crazed demon, and it exuded a terrifying aura that was far from anything of this world.

For the following days, until I was eventually found, I continued to be subjected to my sister’s abuse.

And as a result of this ordeal, I carried numerous traumas with me, eventually finding myself unable to form romantic feelings for any woman.

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The name of the older sister who imprisoned Yuran is “Maya Kimisaki,” and she has three younger sisters.

Yuran came to the Kimisaki family when Maya was in the first grade,

At first, she disliked Yuran, but when she was being bullied at school due to her stubborn personality, Yuran defended her from a large group of people throwing sand at her in the schoolyard and made them stop bullying her, and Maya gradually became attracted to her brother, Yuran.

It was in the second year of junior high school that she realized her love for him.

When she saw Yuran being confessed to by another girl, Maya realized that she was tormented by intense jealousy, and at the same time, she realized that she was intensely in love with Yuran.

That was the beginning of the nightmare,

Maya, who has realized her love for Yuran, gradually becomes madly in love with Yuran.