How I Ended Up with an Extreme Yandere Landmine Beauty When I Asked to Hang Out with My Best Friend's Sister to Get Better at Talking to Girls

Chapter 19: A New Yandere Peeks Heavy Affection Through the Gap in the Door.

The sound of the intercom echoed through the house, announcing a visitor.

Just like Mayana had said earlier (somehow knowing it), my parents wouldn’t be back from work until night.

Until I was in middle school, my mom used to come home early, but once I started high school, she began working late like normal.

That means whoever’s here isn’t family.

If it’s anyone, maybe Shinichi?

But Shinichi’s probably busy with club activities too…

“I’m going downstairs to check the intercom. It could be some weird salesman or solicitor.”

“O-okay.”

“…………Be careful.”

What’s with the “be careful”?

Well, if it’s some creep, I can just pretend no one’s home.

I went down the stairs to the first floor and pressed the talk button on the intercom in the living room.

Then…

“Heyyy, Ryoya~? Yoo-hoo~? I just came by because I wanted to ask you something~”

Oh. It’s Maki.

I got all worked up for nothing.

But… it’s been a while since Maki came all the way to my house on her own.

Shinichi, Maki, and I are always together as a best-friend trio at school.

Back in middle school, we still went to each other’s houses to hang out, but once we hit high school, maybe because of puberty, Maki pretty much stopped coming over to mine.

When she does come, it’s only when the three of us are meeting up or for someone’s birthday.

So what’s up with today?

“Ryoya? What’s wrong? Open the door~”

“O-oh! Coming right now!”

I hurried to the front door, unlocked it, and started to undo the safety chain I had on just in case.

But right before I could finish removing the chain, Maki, who was waiting outside, forcefully yanked the door open with a clack.

“Yoo-hoo, Ryoya?”

“No, it’s not ‘yoo-hoo’! Why are you pulling the door while I’m still taking the chain off?”

“More importantly, Ryoya, those two pairs of chunky platform boots at the entrance… whose are they?”

“Huh…”

Even though the chain was holding it back, Maki peeked her eyes through the narrow gap of the opened door and looked inside the house.

This is bad… I have to explain to Maki that those two are here.

And in Mayana’s case, she’s Maki’s little sister… so she has nothing to do with any “getting used to girls” training.

“No way, Ryoya…”

“Uh, um…”

H-how am I supposed to explain this?

—

Chapter 20: Maki’s Sudden Visit, Yandere Battle Round Two

With Maki showing up, my house became even more chaotic.

First, let’s get the situation straight.

Maki already knows that Azuri is the partner for my girl-experience training. She was worried because of some rumors about Azuri, but she still accepted it, more or less.

On the other hand, as for her little sister Mayana, Maki herself sent her here yesterday supposedly to keep an eye on me. But she shouldn’t know that Mayana is currently in my house right now.

More than that, Maki probably has no idea that Mayana and I have already reached the point where we can talk fairly normally.

“Hey… Ryoya, open the door already. And whose shoes are those?”

While I slowly unhooked the chain, I desperately thought about what I should say.
O-okay, in this situation…

“A-actually! When I talked with your little sister Mayana yesterday, Azuri was there too, and the three of us ended up saying we wanted to hang out in my room together. So yeah, right now everyone is in my room!”

It wasn’t wrong. It wasn’t a lie.
But if you asked whether it was completely truthful… it was walking a very dangerous line.

Still, if she got the wrong idea and thought I was some dangerous guy targeting my friends’ little sisters, I would be finished!

“…Pfft, ohhh, that’s all it was!”

Maki stepped inside after I opened the door, and her usual smile returned to her face.
Huh? She’s not mad that I’m hanging out with Mayana?

“I seriously thought some weird bug had gotten close to you outside of my control! Geez, Ryoya, if you’re going to hang out with our best friends’ little sisters, you could at least say something!”

“Yeah, sorry, Maki. I’ll make sure to tell you next time…”

Phew… I thought she would completely lose it from a big sister’s perspective… Wait, hold on.
Didn’t Maki just say something weird?
Something about… control?
…W-well, it’s probably just her usual joking around.

“…Big sis.”

While we were talking, Mayana came down from the second floor.

“M-Mayana! The family-shared location showed you were here, so I got worried and came running!”

“…Sorry. I forgot to tell you.”

“You didn’t tell her, Mayana? Maki came all the way here because she was worried about you, you know?”

“Ah—no, that’s not it, Ryoya. More than being worried about Mayana herself, I was worried that maybe some other weird girl from Mayana’s school, someone different from Azuri-chan, had gotten close to you again!”

Huh? She came here after checking Mayana’s location, but she’s worried about me?
I-I don’t really get it.
Maki seems kind of strange today.

“Well, if that’s the case then it’s fine! So I’ll head back now!”

Maki left the house, still wearing that strangely bright expression the whole time.

H-how should I put it… she felt different from the usual Maki.

Even though she didn’t show it on her face, somehow it seemed like she had been angry the entire time.

“…As expected, Big Sis too.”

“What’s wrong, Mayana?”

“Nothing… More importantly, Ryoya-senpai, let’s hurry back upstairs.”

“Hurry? Oh right, we left Azuri alone in the room. We should get back quick or she’ll feel bad.”

“That’s not what I meant… Though it might already be too late.”

“Huh?”

I didn’t really understand, but I went up the stairs together with Mayana and returned to my room where Azuri was waiting.