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

Chapter 28: After the Chaos

“Sorry for causing a disturbance.”

As the eldest son, I bow to the police officer who came to our house.

Apparently, a neighbor heard my scream and called the police, so an officer from the nearby station arrived quickly.

When the officer got here, Ayuka and Rinka were still fighting, and the cutting board was about to break when Rinka was pulled away.

I don’t know if even Rinka couldn’t overpower the officer or if she just came to her senses.

After that, they asked us a bunch of questions, but in the end, it was settled as a sibling fight, and we got a stern warning.

After the officer left—

“…”

We all just stay silent, and an awkward atmosphere lingers.

No one makes eye contact.

Rinka’s been looking down ever since the officer pulled her away.

“…I’ll put the cutting board back.”

Fuzuha escapes the awkwardness, taking the nearly broken cutting board back to the living room.

“…I’m going to take a bath.”

Ayuka follows, heading into the changing room by the stairs.

“I-I’m going to study in my room.”

I say this to Rinka and head to my room.

As soon as I enter, I collapse onto my bed.

“What even happened today…?”

That sums it up.

From morning to night, I was on a date with Kirino-san, then came home to a dark, runaway Rinka.

And to top it off, we had to deal with the police.

“…Is this all because I didn’t tell Rinka I was going on a date with Kirino-san?”

No, but come on, what else could I do?

If I’d told Rinka this morning I was going out with Kirino-san, I’d have been choked right then and there.

Still, aren’t I a super kind big brother?

Even after being choked like that, I didn’t scold Rinka at all.

“Man, my neck still hurts.”

The most shocking thing today was Rinka’s strength.

When she was choking me, I really thought I’d pass out for a moment.

And from the feel of it, she wasn’t even serious.

When she cracked the cutting board, her hand didn’t even shake, so I know she wasn’t trying her hardest.

Praising myself, I look in the mirror.

“Yup, the marks are pretty clear…”

My neck proudly displays the choke marks.

This is like a scene you’d hear in a yandere situation.

A boyfriend, chained up by his yandere DV girlfriend, tries to take off the collar while she’s at work, but she comes home early and catches him.

As punishment, she chokes him, and the marks on his neck, which were finally fading, come back.

“How am I gonna explain this to Kirino-san the day after tomorrow…?”

Hiding it… yeah, that’s impossible.

Getting it to fade by tomorrow isn’t realistic either.

Kirino-san probably hasn’t noticed my masochistic side yet.

So maybe seeing these marks will awaken her sadistic side… maybe…//

But wait.

If my old comrades see these marks, they’ll think Kirino-san and I did that kind of play, and she’ll become their nighttime fantasy material.

In masochistic scenarios, NTR has a certain popularity.

But I don’t get it.

What’s exciting about NTR?

Though, I do love reverse NTR.

I’m sure Kirino-san doesn’t have that kind of taste, but I used to dream about it.

“…I’m sleepy.”

Thinking about the day after tomorrow won’t help.

I know the pain in my neck will keep me up tonight, so I should turn off the light early.

As I go to switch off the room’s light—

“…Hm?”

I hear footsteps coming up the stairs from outside my room.

“Is that… Fuzuha? No, she wouldn’t climb this slowly.”

It’s like the pace and sound of a prisoner walking up the thirteen steps to execution.

“Could it be Rinka?”

Given how she was looking down earlier, I can imagine Rinka climbing like this.

The sound reaches the hallway and heads toward Rinka’s room, opposite mine.

“Come on, give me a break…”

This is gonna make things annoying starting tomorrow…

I close my eyes early to escape the pain in my neck while lamenting this in my mind.

—

Chapter 29: The Cool Sister’s Siege

“…Ugh”

The long weekend was over, and Monday came.

Yesterday, I studied for tests in my room all day.

The day before, something happened.

Probably no one in the family went out.

Dinner was an unheard-of event where everyone ate separately.

It seems Rinka didn’t come out of her room once and didn’t make dinner.

“…What about breakfast…?”

Given the situation, I didn’t think she made lunch, but what about breakfast?

I washed my face, changed into my uniform, and went to the living room on the first floor.

“…”

Ayuka and Fuzuha were in the room, silently playing with their phones.

I looked at the table, and there was no breakfast.

“There’s no breakfast today,” Ayuka said, guessing what I wanted to say.

“…Is Rinka already at school?”

“Her shoes are still at the entrance, so she hasn’t gone,” Fuzuha answered, sounding a bit sad.

In short, Rinka was holed up in her room.

That Rinka…

I knew about situations where a cool, princely girl gets too full of herself, almost gets dumped by her boyfriend, and falls apart, but I didn’t like those scenarios much.

“…I see.”

Knowing there was no breakfast, I joined them and started using my phone.

There was no message from Rinka… not that I expected one.

Rinka rarely messaged anyway.

I put my phone in my pocket and went upstairs to grab my backpack.

“Hey,” Ayuka’s gaze moved from her phone to me.

“If you’re thinking of checking on Rinka-neesan, you’d better not.”

“Why?”

“Because, honestly, her current state is her own fault. She choked you and caused a police incident. Someone like that doesn’t deserve your kindness right now.”

“Ayuka…” Fuzuha said.

“Ayuka-nee…” I added.

There was quiet anger in Ayuka’s eyes.

That’s right.

Ayuka and Rinka were already fighting before the incident two days ago.

“I’m not going to check on her. I’m just getting my backpack.”

I left the living room and went up the stairs.

I told Ayuka that, but maybe I should check on Rinka before going to school.

While thinking, I reached Rinka’s room.

I quietly put my ear to the door.

“…”

I heard nothing.