My Clingy Yandere Stepsister Turned Out to Be My Ex’s Twin Sister [Dropped] - Chapter 04: The Ex-Girlfriend, Rejected by Her Beloved Sister

Chapter 04: The Ex-Girlfriend, Rejected by Her Beloved Sister

Mishiro Azusagawa was born with a unique condition—something that set her apart from others.

Because of it, she struggled throughout her childhood, never quite fitting in.

But no matter how difficult things got, there was always one person by her side.

Her twin sister—Yuzuki.

“Nee-san, don’t cry.”

Whenever Mishiro was sad, Yuzuki was always there to comfort her.

“Yuzuki-chan…”

“Nee-san, you can’t cry. Here, smile.”

“…Then, give me a kiss.”

With a little sigh, Yuzuki would smile—

And press her lips against her sister’s.

Just like that, the heavy fog in Mishiro’s heart would clear, replaced with warmth and peace.

“Feeling better now?”

“Yeah! Thank you, Yuzuki.”

“Then, let’s go home.”

“Mm!”

Yuzuki wasn’t just Mishiro’s sister.

She was her emotional anchor—the one person she could never live without.

But then…

“Divorce…? What do you mean…? Mom, Dad…?”

One day, their parents dropped a bombshell—

They were getting divorced.

And the worst part wasn’t their family breaking apart.

It was that Mishiro was going to lose Yuzuki.

“No! I don’t want to be separated from Yuzuki! No! Nooo…!”

Mishiro sobbed uncontrollably, screaming and wailing.

Losing Yuzuki meant losing the only person who understood her condition.

The only one who accepted her secret.

The only one who cared for her, spoiled her, and stayed by her side.

“Nee-san, don’t cry.”

“Yuzuki-chan…”

Yuzuki smiled softly—

Then placed a gentle kiss on her sister’s cheek.

Mishiro’s face turned bright red.

“It’s okay. If you are a good girl… I’m sure we’ll meet again someday.”

Those words…

Were a curse.

“If I’m a good girl, I’ll be able to see my sister again.”

Mishiro, still just a child, believed it completely.

And so—

“I understand…! I’ll be good!”

She became the angel everyone adored.

★

And now—

Into the classroom of Ryota Iida and Mishiro Azusagawa —

Stepped Yuzuki.

Her long-lost twin sister.

Mishiro’s heart soared.

She had finally found Yuzuki again.

Her sister’s words had been true all along.

She had been a good girl, and now—

They were reunited.

Lunchtime.

“Yuzuki-chan!”

With a beaming smile, Mishiro rushed toward her sister.

Yuzuki was seated by the window, alone.

The moment the lunch bell rang, Mishiro sprinted to her side—

And threw her arms around her.

“Ahh… Yuzuki-chan… Yuzuki-chan…♡”

Mishiro inhaled deeply, savoring her sister’s scent.

A sweet, floral fragrance filled her senses, making her expression melt into pure bliss.

Yuzuki had grown into a stunningly beautiful, utterly captivating young woman.

Her soft, flawless skin was just as smooth as it had been when they were children.

Her body, now curvy and full, was so alluring that Mishiro instinctively swallowed.

She wrapped her arms tightly around her sister—

Squeezing her in a deep, passionate embrace.

Even deeper than any she had ever given to Ryota.

A hug overflowing with raw emotion.

The classroom fell silent.

Ryota—along with the rest of their classmates—stared in wide-eyed shock.

“…What the hell is going on?”

“Was the Angel-sama… always this passionate?”

“I-I dunno… but they’re both crazy beautiful.”

“Two gorgeous sisters hugging like that… It kinda feels wrong somehow.”

Mishiro didn’t hear any of it.

She was lost in the overwhelming joy of reuniting with her beloved sister—

Until.

“Stop it, Onee-san.”

Thud.

Something pushed her back.

And the next thing she knew—

Mishiro was on the floor.

“H-Huh…?”

What… just happened?

Who… pushed her?

Slowly, she looked up—

And realized, far too late, that it had been Yuzuki.

“Y-Yuzuki…-chan…?”

Her sister looked down at her, eyes cold and emotionless.

Mishiro froze.

She had never seen this expression on Yuzuki before.

The Yuzuki she knew was always by her side, smiling warmly, like an angel—

Always supporting her, always there.

That was the image Mishiro had of her sister.

But now—

Yuzuki’s gaze was empty. Cold. Unfamiliar.

Why?

Why are you looking at me like that?

Why did you… push me away?

“H-Hey, Yuzuki…?”

A voice called out beside her.

It was Ryota—her ex-boyfriend.

His face was full of confusion as he reached toward Yuzuki.

“What’s wrong?”

“Nothing. I just found my sister… annoying.”

BAM.

It felt like she had just been smashed over the head with a hammer.

…Annoying?

Yuzuki… called her annoying?

No. That wasn’t possible.

Her sister would never say something like that.

Not her Yuzuki.

“Throwing yourself at someone in public without thinking is just… a nuisance.”

“I-I’m sorry… Yuzuki-chan…”

No. No, no, no.

She didn’t want Yuzuki to hate her.

Panic rushed through her as she apologized immediately.

But—

“Sorry? Are you sure you’re saying that to the right person?”

“…Eh? W-What do you… mean?”

Mishiro’s breath hitched.

Yuzuki was angry. At her. 

But why?

She had no idea what she had done wrong.

“You really don’t understand…? I see… I understand now, Onee-san… no, Azusagawa-san.”

“Y-Yuzuki?!”

What… what was that distant tone?

Why was she speaking to her like she was a stranger?

“Right now, I’m about to have lunch in the cafeteria… with my beloved Onii-san~♡”

Yuzuki suddenly wrapped herself around Ryota.

And then—

Chuu…♡

“W-WHAAAAAAAAAAAAAA?!?!”

A shock unlike anything before exploded inside Mishiro’s mind.

Her precious, darling little sister—

Had just kissed a man.

Not just any man—

Ryota.

“W-What are you so surprised about, Azusagawa-san? We’re siblings, so it’s only natural for us to share a kiss… right?”

Of course.

Sibling kisses—that was normal.

She and Yuzuki had always done it.

But—

That was supposed to be only for her.

That was supposed to be HERS.

“Y-Yuzuki…-chan… w-what about… me…?”

Her voice was barely a whisper.

Can I have one too?

A kiss, like before.

A sibling’s kiss, after all this time.

No one else in the room—neither Ryota nor their classmates—understood what she meant.

The only one who could possibly grasp her meaning—

Was Yuzuki.

Because Yuzuki knew.

She knew exactly what kind of person her sister was.

And because of that—

“I’m sorry. But… we’re strangers now.”

“…!!?”

Mishiro’s entire body shook.

It felt like something precious was slipping through her fingers.

A hollow emptiness swelled in her chest—

A deep, gut-wrenching feeling of loss.

Of having something taken from her.

“Well then, let’s go, Onii-san~♡”

Still stunned, Ryota didn’t resist as Yuzuki took his hand and led him away, smiling.

A smile that wasn’t for Mishiro.

And that made something inside her snap.

“Why?!”

Why him?

Why would Yuzuki choose Ryota instead of her?

Her words spilled out, raw and desperate—an impulse that might just expose everything.

But she didn’t care.

She couldn’t lose Yuzuki.

“Because you’re the one who threw Onii-san away.”

Her sister’s cold, emotionless words pierced through her chest like a blade.

She couldn’t even move.

Couldn’t even breathe.

“N-No…”

Her precious little sister had rejected her.

And not only that—

She had been stolen from her.

By the very man she had abandoned.

“D-Don’t go… Yuzuki… please, don’t go…”

Mishiro broke down in tears, but the classmates around her only watched in confusion.

Of course, they did.

Not a single one of them understood why she was crying.

The only person who truly knew who Mishiro really was—

Was Yuzuki.

And the fact that even she had pushed her away—

That was what hurt the most.

Why? Why was her sister acting so cold?

Why was she pushing her away?

And why…

Did Yuzuki say it was because she broke up with Ryota?

Mishiro gasped in realization.

So that was it.

Yuzuki was angry.

Angry that she had rejected the man who would later become her beloved brother.

And that anger…

Had made her turn against her.

“What… what have I done…?”

Now—there was a misconception that needed to be cleared up.

Mishiro was currently devastated—

Because she had dumped Ryota Iida.

It was a common story.

A girl rejects a guy without realizing what a great catch he actually was—

Only to regret it when it’s already too late.

At a glance, Mishiro’s situation looked exactly like that.

But—

It wasn’t.

Yes—Mishiro was regretting breaking up with Ryota.

But not because she realized he was a great guy.

It was because—

Losing Ryota meant losing Yuzuki.

Her beloved little sister was now in his arms.

And worst of all—

Yuzuki hated her now.

To put it simply—

Mishiro was a Lesbian.