Somehow I Ended up Dating the Perfect Female Classmate, but My Sister Found Out and They're Turning Into Yanderes - Chapter 6-7

Chapter 6: School Life with My Girlfriend

Kiyoto’s and Kirino’s classroom was Class E for third-year students, located on the fourth floor of Building 2.

“Hey, Kiyoto!”

“What!?”

The moment Kirino and Kiyoto entered the classroom, Kiyoto’s only friend, Kouta Akasata, grabbed Kiyoto’s arm and dragged him to the boys’ bathroom.

“You came to school with that Kinui girl, didn’t you!?”

“Yeah, we came to school together. We’re dating, after all.”

Kiyoto revealed the shocking truth, and Kouta’s face froze with his mouth wide open.

“What!? D-dating…? You and Kinui!?”

“Kouta… face reality.”

“Haaaaaa!?”

The bathroom echoed unnecessarily, so Kouta’s scream rang through the entire floor.

Good, good. Kiyoto was waiting for this reaction.

“You… did you blackmail her or something!?”

Kouta grabbed Kiyoto’s collar and pushed him against the wall.

“Confess, Kiyoto! There’s still time. Study on your own. I’m saying this because I care about you as my friend!”

“Kouta…”

You’re thinking of me…

“Thanks, Kouta. I feel our bond even stronger now.”

“Kiyoto… that’s right. That’s my friend! So, let’s go to the staff room now—”

“I’ll keep that feeling in my heart.”

With that, Kiyoto left the boys’ bathroom.

“Damn itttt!”

Kiyoto heard an angry shout from the bathroom but pretended not to hear and returned to the classroom.

“Where did he take you? Did Kouta do something to you?”

As soon as Kiyoto entered the classroom, Kirino checked on him.

Kiyoto felt happy that Kirino worried about him so much.

Meanwhile, countless stares surrounded Kiyoto and Kirino.

But today, those stares made Kiyoto’s lunch tastier, and the losers didn’t know it.

“Alright, everyone, let’s start homeroom. Take your seats.”

The homeroom teacher came in at the perfect time, and Kiyoto took his seat.

Huh? Kiyoto couldn’t see Kouta, the loser, anywhere.

Could he be escaping reality in the bathroom, comforting himself…?

No way.

“The first period today is my class, but as promised, we’ll change seats.”

What? Could this be the classic rom-com moment where Kiyoto sits next to his girlfriend…?

It happened.

“Yay, Kiyoto! We’re sitting next to each other!”

“Y-yeah, that’s great.”

Sitting next to his girlfriend was enviable. Kiyoto should be happier!

But the losers (all the boys and some girls) gave off a murderous vibe.

Kiyoto thought their stares felt good, but now he felt a bit in danger.

If Kiyoto shouted, “Yes! I get to sit with Kirino!” he’d be silenced instantly.

“Oh, right. I made lunch for you today, Kiyoto… want to eat it?”

“Y-yeah, I’m looking forward to it.”

That’s Kirino for you.

Making lunch plans in this murderous atmosphere.

Maybe she didn’t even notice these losers.

Then came lunch break.

Kiyoto and Kirino ate lunch on the rooftop, a classic spot.

Joto Nishi Prefectural High School had five buildings, but they chose the rooftop of Building 3 for the best city view.

“S-sorry, Kirino, you made this for me, but…”

“N-no, it’s fine. I made the lunch without you asking, so it’s my fault.”

Kiyoto forgot when Kirino mentioned her lunch, but Rinka had made him a lunch too.

“But it looks delicious.”

Kiyoto’s lunch had fried chicken, hijiki, and salad, evenly divided, with minced chicken over white rice.

Rinka knew Kiyoto’s likes and dislikes, so it was perfect.

“Did your mom make this?”

“No, my mom’s almost always on business trips and rarely comes home. My sister makes it instead.”

The moment Kiyoto said that, Kirino’s smile seemed to fade.

“…Kiyoto, you have a sister?”

“Yeah, four of them.”

“Wow, four… I see.”

What? Kirino’s mood seemed to drop suddenly.

“Oh, I-I might not have enough with just this, so can I have some of your heart-shaped eggs, Kirino…?”

“Huh? Oh, yeah! Eat as much as you want!”

Girls must feel happy when someone eats their homemade lunch.

Maybe Kiyoto should tell Rinka he doesn’t need her lunches anymore.

Lunch break ended, and Kiyoto and Kirino returned to Class E.

But was it Kiyoto’s imagination that Kirino didn’t say a word and looked expressionless on the way back?

By the way, Kiyoto ate so much of Kirino’s lunch that he got full and left some of Rinka’s lunch… it’ll be fine, right…?

—

Chapter 7: Temporary Enrollment

“Hey, big brother, can’t you pedal a bit faster?”

“No, you’re just too fast.”

Right now, Ayuka and I are heading to check out the cram school she attends, as promised.

“You should at least master riding a bike. You’re not a grade-schooler anymore.”

Ayuka, riding her bike way ahead of me, throws that jab.

Since the cram school is near the station, the streets are crowded with people.

Navigating through them on a bike naturally requires caution, but Ayuka doesn’t slow down and skillfully avoids bumping into anyone.

Why are all the girls around me so athletic?

“Look, you can faintly see it now.”

Sure enough, I spot a large sign with the cram school’s name ahead.

Other buildings line up closely, so even though we’re near, the sign is only faintly visible.

Was my local station always this urban?

“Here’s the bike parking area.”

A bike parking lot sits right next to the cram school building.

“Hey, big brother, if you park there, no one else can get their bikes out.”

I tried parking slightly outside the designated spot since it was full, but Ayuka called me out.

Surprisingly, she cares about the other students.

We enter the building together and take the elevator to the third floor.

If Rinka were here, she’d probably complain about laziness and force me to take the stairs.

“Hey, were you just thinking about Rinka-neesan?”

“N-no, not at all.”

Ayuka’s eyes sharpen.

Are those two fighting again?

No choice, I’ll have to patch things up between them when we get home.

“Your earlier words didn’t get through? I indirectly told you not to think about Rinka-neesan.”

“…Yes.”

Guess I should solve my own problems.

The elevator reaches the third floor, and I follow Ayuka into the hallway.

The ride up felt strangely long.

Once in the hallway, the cram school is just to the right.

The moment Ayuka opens the door—

“””Hello!!!”””

The teachers turn toward us in unison and greet loudly.

Ugh, I’m bad with this kind of atmosphere.

“Headmaster, my brother is here to observe today.”

Ayuka introduces me, and I bow, saying, “Pleased to meet you.”

“Oh, you’re Ayuka-chan’s brother, Kiyoto-kun, right?”

This elderly man in a scientist-like coat and glasses seems to be the headmaster.

“Yes, I’m a third-year high school student, and I hope to build my academic skills for university entrance exams.”

Man, I’m super polite, aren’t I?

“No need to be so formal. You’re here to observe today, right? Well, an English class for university prep is about to start, so feel free to sit in.”

The headmaster sits at a counter in the middle, with the middle school prep class on the left and the university prep class on the right.

As instructed, I head right, opposite Ayuka.

“By the way, another student from Joto Nishi High School is observing today, too.”

The headmaster keeps talking, but Ayuka’s voice interrupts.

“Big brother, don’t you dare leave until my class is over.”

“I got it.”

She stresses it one more time before we part.

Several classrooms line the right side, each with a subject name on a plaque.

I enter the classroom marked “English,” where a few students are already seated, studying.

It’s better than the lively chatter of friends at school.

I glance at my school English textbook when the teacher enters, and the class begins.

At the same time, a class in the next room starts, and it gets noisy.

Some students look annoyed, but it doesn’t bother me much.

“Oh, ~no-chan, yoo-hoo! You came!”

“Yeah! It’s so lucky I get to observe Yosh~chan’s class first!”

I can hear them clearly, but since my class has started, their conversation doesn’t register.

From there, I attend the English class for about an hour and twenty minutes.