Somehow I Ended up Dating the Perfect Female Classmate, but My Sister Found Out and They're Turning Into Yanderes - Chapter 99-100

Chapter 99: Farewell to My Master

“Well then, Sister, have a safe trip.”

“Yes, you all take care too.”

After the goodbye, Satsuna walked through the ticket gate without looking back and disappeared into the station.

I thought she’d say a bunch more stuff at the end, but she left us surprisingly easily.
…Did we really have to come all this way just to see her off? Was there any point?

“…Hey, didn’t Satsuna look at Brother kinda sadly at the very end?”

“D-did she? I didn’t really notice her eyes…”

Just like Ayuka said, at the last moment Satsuna was staring at me with really sad eyes.
Well, it must be hard to part with her beloved dog, huh.
I totally get how Satsuna feels.

“Those eyes she had when she looked at Kiyoto… I don’t like them.”

You really shouldn’t start badmouthing her the second she’s gone, Rinka.

“But isn’t it good? At least she didn’t lecture us or demand any presents.”

“…Those eyes were even more unpleasant than either of those.”

“W-well, Satsuna’s already on the platform now, so how about we head home?”

Following Fuzuha’s words, we left the bullet-train ticket gate and started walking back the way we came.

“By the way, have you all finished your summer homework?”

…Figured someone would bring it up soon, but did you really have to say it right here?

“I finished everything according to my plan.”

“I’m a third-year, so I didn’t even get any.”

“Same as Ayuka, I didn’t get any either.”

Oh, I did get a ton from cram school, but I barely went, so it’s basically the same as not having any.

“Is there a summer homework assignment to keep a diary?”

“Nope.”

“We’re not elementary kids, of course there isn’t.”

“I don’t have one either, obviously.”

You know the kind, right?
Big drawing of the day at the top and then a surprisingly long paragraph of your thoughts underneath.

“…I see.”

“What? Were you worried we’d write about everything that happened after Satsuna came home?”

“You and Kiyoto would totally do that.”

No, nobody would think to write stuff like that in a diary, right?

Even if we stretch it and say we’d write the words, how would you draw the pictures?
Am I supposed to draw myself licking Satsuna’s foot?
The moderate people might give it a bunch of likes, but the hardcore ones would probably complain like “if you’re gonna do it, lick her armpits or something even dirtier.”

“If anyone wrote something like that in their diary, it would damage the dignity of the Nuregami family… but since there are no diaries, there’s no problem.”

“You really get super careful when it comes to family stuff…”

Rinka and Ayuka walk side by side chatting casually.
It’s been months since I last saw this kind of scene.

“Brother.”

“Hm? What’s up, Fuzuha?”

“I wasn’t wrong after all, right?”

“Huh?”

“Calling Satsuna back wasn’t a mistake, right?”

“……”

I look again at Rinka and Ayuka walking together up ahead.

Maybe the only reason we’re seeing them get along like this is because Satsuna came home.

When I think about it that way, Satsuna really does seem like the perfect oldest sister for these girls.
And the perfect owner for me too…//

“But it’s also true that Brother got hurt because Satsuna came back.”

“Well, that’s…”

…I can’t really deny it.
It’s true that Satsuna provoking Kirino led to that whole mess.
And then there’s this “bandage on the side of my neck.”

“…That mark on your neck was left by Satsuna too, right?”

“Y-yeah. She even told me to take the bandage off once school starts so everyone can see it.”

…My master really is a total sadist through and through.

“That’s also because I called Satsuna back in the first place.
So I’m really sorry, Brother.”

“I’ve told you so many times, it’s not your fault, Fuzuha.”

And I’ve said this many times too, but I don’t actually hate getting direct harm from them.
If anything, I welcome it anytime.
I’m even grateful to Fuzuha for creating the chance for all of this.

“But you know, I think Satsuna really loves you from the bottom of her heart and did all that because she wanted to make you hers.”

In that sense, you could say there was no real malice in what Satsuna did.
Well, of course there was malice since she’s a sadist, but it was pure love that came from being a super sadist.
Anyway, I can’t put it into words very well, but I think that’s what Fuzuha is trying to say.

“Brother, don’t ever forget that Satsuna truly loves you with all her heart, okay?”

After that, Fuzuha goes quiet.

“……”

“When I was little, I was a more normal girl than I am now.”

I remember Satsuna saying that.

And also

“The one who created the ‘me’ that exists right now is you, Brother.”

If it’s really true that I was the cause that turned Satsuna from a normal girl into the sadist queen she is today, then maybe yesterday I should have chosen to go with her.
But I didn’t pick that option.
So the only thing I can do now is…

…Of course I have no intention of fixing this kink Satsuna gave me, and I’m gonna keep living with it.

And I’m never going to erase or forget the feeling of Satsuna’s feet, the feeling of her toes, the pain and pleasure when she stepped on my dick, the marks from the collar, or the bite mark on my neck.

I believe that’s the only way I can take responsibility right now.

We go through the ticket gate and wait for the train on the platform.

Thank you, Satsuna.

I don’t really know what for, but my instincts made me whisper that in my heart without thinking.

—

Chapter 100: First Day After Summer Break

“If you don’t get up soon… I’ll rip that nail off.”

“!?”

I thought I heard something dangerous in a voice that sounded way too much like Kirino’s, so I sat up, and it was already morning.

September 1st.

Even on the first day of the second semester I woke up to a yandere voice.

I wash my face in the bathroom and change into my uniform.

“…Did I lose weight?”

When I put on the uniform it feels a bit looser than before.
Well, after that crazy summer break anyone would slim down.

I head downstairs and walk into the living room. Everyone’s already in their uniforms eating breakfast.

Seeing them all in uniform feels kinda fresh.

“Hey Kiyoto, stop standing around and sit down and eat already.”

Rinka hurries me, so I sit and eat while secretly checking out everyone’s “grown-up parts.”
Uniforms are usually pretty tight, so any growth shows up right away.

Whoa! Fuzuha and Ayuka’s chests look a little bigger than they were before summer break.
And Ayuka got a bit taller too.
She’s gonna look even more like a model now.

Now for Rinka…

“……”

“What?”

Did her chest shrink…?

It was already flat enough to be called a cutting board, but after summer break it looks even flatter.

Hey, like I said before, I don’t focus on boobs that much, okay!?
If anything, I care more about overall figure!?

As for Rinka’s figure…

……

Yeah, it hasn’t really changed.
She was already tall with a model body, so maybe she did grow but it just doesn’t show much.

Wait, but her hair got longer?

It used to be short and gave off that cool androgynous-girl vibe, but now it reaches down to her spine.

I should’ve noticed right away, but during summer break she always had it tied back, so I didn’t realize.

“…Is my long hair bothering you?”

“Huh?”

“You’ve been staring at me weirdly for a while… I figured you were mesmerized.”

…Short-haired Rinka gives off “cool ally” energy, but long-haired Rinka feels like a former ally who fell to the dark side.

A strong enemy who’s cool but still has that proper heroine vibe.

“Hey, mesmerized? Aren’t you a little full of yourself?”

“What, you jealous? Then why don’t you untie that ponytail in the back?”

“That’s not what I meant… ugh, whatever!”

Ayuka was the one who brought it up, but she quickly drops the topic and heads toward the entrance.

“So, how is it, Kiyoto? My long hair?”

She skips the tsundere act and looks straight into my eyes, asking for my honest opinion.

“…Y-yeah, the long hair suits you really well… it looks cool.”

“Cool, huh… if you say so, I’ll believe it.”

…Did Rinka grow her hair out to look cuter, or to look cooler…? Which one is it?

“…I have morning practice, so I’m heading out now.”

They have morning practice on the very first day of the semester…?

Actually, if there’s morning practice she should’ve already left before I woke up…
Did she seriously stay just to ask me what I thought of her long hair!?

“Well then, I’ll work up a little sweat before morning practice.”

With that, Rinka grabs her stuff and heads to the entrance.

““……””

The only ones left in the living room are me and Fuzuha.

Fuzuha looks like she wants to say something, but she keeps hesitating like she’s not sure if she should.

After a while she finally says,

“I should get going too.”

Fuzuha follows Rinka and heads to the entrance.

…This might sound a little conceited, but I think Fuzuha actually wanted to walk to school with me.

But there’s no way I wouldn’t walk with my girlfriend Kirino on the first day after summer break.

If Fuzuha joined us, she probably figured something bad might happen to me again, so she couldn’t bring herself to ask.

If that’s the case, it was a really smart decision. If she had asked, I probably wouldn’t have been able to say no and it would’ve turned into another bloodbath.

“Alright, time for me to go too.”

I finish breakfast, drag my heavy body up, grab my bag, and head out the door.

“…It’s hot.”

It’s not fully autumn yet, so the second I step outside in my uniform sweat starts pouring out.

But I bet Kirino doesn’t sweat at all.

So unfair! Let me smell a girl’s sweat too!

“Ah, Kiyoto!”

Like always, Kirino was already waiting at our usual meeting spot.

“It’s been a while. Since the summer festival… hey, what’s with that bandage? Did someone hurt you? Let me see.”

Yup, I figured Kirino would ask about it right away, even on the first day after summer break.

Wait, isn’t this déjà vu?

I feel like something really similar happened before…