Vol 1 Chapter 2 – My Sister’s Rampage

A few days later, I was sitting on a bench in the hospital’s courtyard.

Ayano and I had exchanged contact info when we spoke, and we’d been talking every day since.

We had promised to spend today together, too.

“Sorry to keep you waiting…”

Ayano came running up to me, out of breath.

“You didn’t have to rush like that…”

“No, I wanted to see you as soon as possible, Kisaragi-kun…”

“I see… Well, I wanted to see you soon, too, Ayano…”

“Feh…/// I’m gonna die from the cute…!”

“I’d rather you didn’t die…”

We were making small talk like that.

For the record, we weren’t officially dating or anything yet.

Our relationship was strictly in that “more than friends, but not quite lovers” zone.

My plan in this world is to build a harem.

Ayano is definitely cute, but I figure there’s no harm in enjoying this world a little more before settling down.

This world is incredibly convenient for me.

Because, apparently, in this world I’m a handsome guy who’s good at both studying and sports.

And it seems I have a childhood friend, too.

Well, if this world really is a dating sim, then my goal is to conquer all the heroines and reach the harem ending.

“By the way, has anything unusual happened recently?”

“Let’s see… Nothing in particular, I guess.”

“Oh… I’m glad to hear that.”

“Although, they did find a slight abnormality in my regular checkup. Something about my protein levels being high.”

“Huh, is that so… Protein… Could that be related to your s-sperm count…”

For some reason, Ayano’s face turned a little red.

I wonder why…

Oh well.

I continued the conversation, paying it no mind.

Just then, I felt a stare from somewhere.

I looked over and saw my little sister, Yukina.

Yukina was walking toward us.

What’s up with her? Yukina stopped right in front of me. But as soon as our eyes met, she quickly looked away.

What is with her? I wondered, as I called out to her.

Something casual, like, “What’s up?”

But there was no reply.

Just as I was about to call out to her again, Yukina opened her mouth.

But her words were incredibly cold.

She looked down on Ayano with eyes that seemed to view her as garbage.

“Who are you? Could you please stay away from my Onii-sama? And stop looking at Onii-sama with those eyes of a female in heat!! It’s disgusting.”

“Huh!? Y-Yes… I’m very sorry…”

“Hey, hold on! Yukina! Isn’t that a little harsh for someone you’ve just met!?”

I couldn’t help but shout.

This might be the first time I’ve ever raised my voice at Yukina.

Yukina flinched and looked at me.

“I-I’m sorry, Onii-sama… But… this woman is after you! She was about to pounce on you the first chance she got! I can tell!”

“Hah… What are you even talking about…”

“I’ve been watching you forever, Onii-sama! That’s why I know what this woman is thinking, too! She’s plotting to attack you, create a fait accompli, and marry you! You total perv! Stay away from my Onii-sama!”

“Wh-What are you saying!? Me and Kisaragi-kun, getting married!!!!…Heheheheheh!!”

Ayano began to squirm, a creepy grin on her face as she got lost in her delusions.

What is this… This is kinda scary…

Ayano-san… you’ve got a nosebleed…

“What is with this disgusting person… Get away from Onii-sama this instant! You’ll defile him!”

The Yukina I knew was a cute girl who never stopped smiling.

But this was completely different.

She was cold and terrifying, like a completely different person.

Yukina forcibly pulled me up from the bench.

“Hey, Yukina!? I get it, so let go!!”

“No! I won’t let this woman get any closer to you, Onii-sama!!”

“Hey! You’re hurting Kisaragi-kun, please be a little more gentle with him!”

“Shut up! Know your place! You filthy, lecherous bitch!”

I was dragged away from the spot by Yukina.

As I was being pulled along, I glanced behind me.

There was Ayano, watching us, looking like she was about to cry.

The moment our eyes met, Ayano managed a slight smile, but it was obviously a forced one. I could tell she was pushing herself.

I feel like I’m about to be crushed by guilt.

After that, I returned to my room.

And now, I’m lying on my bed.

“Haaaah…”

A sigh escaped me as I recalled what just happened.

I can’t believe things turned out like that…

I never thought Yukina would act that way.

Still, why did she become like that…?

“Haaaah…”

Another sigh.

It was then.

Knock, knock

Someone knocked on the door to my room.

“Yes…”

“Onii-sama, may I come in?”

“Yeah, sure.”

“Pardon me…”

“What is it?”

“Um… I’m sorry about earlier… for being so violent in front of you, Onii-sama…”

Yukina apologized, a remorseful look on her face.

Seeing her like this, I felt a sense of relief.

Yep, Yukina is a cute and gentle girl after all.

That’s what I was thinking.

And that’s why I didn’t realize it.

That the feelings my sister held for me were not those of familial love.

I spoke to Yukina gently.

“Don’t worry about it. You were just looking out for me, right?”

“Y-Yes! But… it wasn’t 100% for your sake, Onii-sama. It was also because of my own selfishness! I… I don’t want any other woman to be with you, Onii-sama…”

“Eh?”

“So, Onii-sama, please go out with me! No, please marry me!”

“Huh?”

“I’m asking you to marry me!”

What is she talking about? Has she lost her mind?

That’s what I was thinking.

But Yukina was looking at me with a dead-serious expression.

It didn’t seem like she was joking.

I tried to calm her down.

“Calm down, we’re brother and sister, right!? So we can’t get married!”

However, it seemed to have the opposite effect.

Yukina became even more agitated.

And then, she said something outrageous.

“It’s fine! I’ve actually kissed you many times while you were sleeping. And… I’ve even done… lewd things to you!”

“What!?”

I was stunned.

Are little sisters in this world all this aggressive and shameless?

“You were asleep so you don’t remember, Onii-sama… but that’s why I’m not a virgin anymore! So please take responsibility!!”

“What!? What are you talking about! You’re still in middle school!”

“And what of it? That doesn’t matter!”

“Yes, it does!?”

“Besides, I have proof! Look! At this sex tape!?”

Yukina fiddled with her smartphone and showed it to me.

On the screen was a naked Yukina and the “me” of this world.

What’s more, the figures in the video were clearly younger than I am now.

There’s a red school backpack nearby… could it be that Yukina was in elementary school back then…?

“What… is the meaning of this…”

“I love you, Onii-sama! If it’s what you wish, I’ll do anything you say! So please, marry me, and get me pregnant!”

Yukina pleaded with me desperately.

But I was just confused.

How in the world did it come to this…

“H-Hold on a second! First, let’s calm down! For now, please leave the room!”

“No! Make me yours, Onii-sama!”

Yukina shouted as she threw her arms around me.

I tried to peel her off somehow.

But she was too strong; I couldn’t break free.

In fact, she just hugged me even tighter.

“Hey, let go!”

“No! Onii-sama is mine!”

“Hah… hah… I get it, just let go…”

“Okay… Then, let’s take a bath together! I’ll wash you, Onii-sama! And after that, it’s straight to bed!”

“Hey! Were you even listening!? I said get out of the room for now!”

In a panic, I slammed the nurse call button next to me.

The nurse who rushed in immediately pulled Yukina off me and led her out of the hospital room.

Somehow, I had escaped the crisis.

This world with flipped views on chastity is way too terrifying…