Konnichiwa, minna! KilllaKirika here, once again indulging in the Yandere Simulator fandom! This time, I'm crossing it over with my favorite anime, "The Melancholy of Haruhi Suzumiya"! Seriously, am I the only one who thought a crossover between Haruhi and Yandere Simulator would be a good idea? Enjoy!

Disclaimer: I don't own The Melancholy of Haruhi Suzumiya or Yandere Simulator. All rights go to their respective owners.


Chapter One

Let me just tell you this; although the SOS Brigade has solved two fake murder cases, with the victim being the same guy, I never could have imagined we'd get caught up in a real one. This is probably good news for Haruhi, since there's something "mysterious" happening, but as for me, it was bad news; this especially puts into consideration the fact that I knew who it was from the beginning. In fact, Nagato and I were the only ones who knew it was a murder; everyone else thought that Najimi-senpai simply disappeared.

It all began on the Friday of the first week of school. All I was doing was walking to the SOS Brigade clubroom while Haruhi had run off, probably to gather some supplies for whatever crazy scheme she had come up with next. That is, until I heard a voice coming from a classroom I was just passing through.

"I know you like Yamada-senpai."

I knew it was none of my business, but somehow, I couldn't shake the feeling that something was wrong here. Thus, I pressed my ear against the door and kept listening.

"Wh-what?! What are you talking about?! I-it's not like I LIKE Taro or anything, BAKA!"

"Oh, but I know you do. I have my resources."

"...Well, what if I DO like him? What are you going to do about it?"

"..."

"H-hey, wh-what are you doing with that knife?! Stop! NO!"

I could hear the sounds of stabbing and maniacal laughter coming from the other side of the door. I couldn't imagine how the person getting stabbed felt... Okay, I actually could, since I had been stabbed by Ryoko Asakura during the previous year. For that reason, I was even more frightful about the whole situation than I should have been; I knew I should have ran, but my legs just wouldn't cooperate as I listened. Finally, after the stabbing and laughing stopped, there was silence for a few seconds. Eventually, it was followed by a sigh.

"Now, I should probably clean up this body before someone finds it..."

At that moment, I knew I had to get away, but I still couldn't; my feet were glued to the floor with my face stuck to the door. Finally, the perpetrator of the crime opened the door, almost causing me to fall to the floor...

And I recognized her.

Her name... Ayano Aishi, was it? Yeah, I think that was her name; I just know that she was in the same class as me this year. She had black hair pulled back into a ponytail - and a very nice-looking ponytail, at that - and black eyes that, when I looked into them, looked soulless. Her North High uniform was stained with blood, and she was dragging someone by her foot.

Wait, no. That someone - a girl with long, orange pigtails - was a dead body!

At that moment, I knew I was screwed.

I was faced with another knife-crazy girl intent on killing someone, just like Asakura...

...Only this girl was successful.

Aishi stared at me for a while before glancing at the knife she also had in her hands and looking back at me again. She then sighed and said the following with a serious expression on her face.

"Listen, you. I'm only sparing you this time because I don't want to kill so sloppily too much. However, should you tell anyone what you just saw, you won't be so lucky. Got it?"

I should have just called the police; even if she was a classmate who regularly had her hair up in a ponytail, this girl needed to get arrested for what she did. However, I was fearful to feel something even worse than Asakura stabbing me, so I just nodded rapidly.

"Good," Aishi-san said. "If anyone asks, Osana Najimi never died. She only went missing."

Thus, the blood-covered Aishi-san, with incredible strength, picked up the corpse bridal-style and ran off, probably to find somewhere to hide it.

There were two things running through my mind when the whole thing unfolded.

The first thought was, "Holy shit, there's a murderer in this school!"

The second was, "Man, Haruhi's gonna love this."

Another SOS Brigade meeting passed without incidents, other than Haruhi's attempt to recruit new members while wearing a bunny girl suit along with Asahina-san. Seriously, in the whole year that I've known her, Haruhi never learns her lesson, does she? Anyway, Koizumi DID ask me what was wrong at one point; I guess I must have looked stressed.

"No, it's nothing," was all I told him, and from there, he let the topic drop.

After we went home, I couldn't stop thinking of Aishi-san killing... Najimi-san, was it? Although I hadn't really talked to her before, I did notice that she was a rather quiet, always-bored-looking girl, like Haruhi was when I first met her. I never expected someone like her to actually kill someone, though; exactly what did Najimi-san do to make Aishi-san want to kill her?

"I know you like Yamada-senpai."

Okay, now what Aishi-san said that originally caught my attention is echoing in my mind. Was that it? Did Aishi-san kill Najimi-san for love?

...Yamada, I don't know who the hell you are, but I think you've got someone absolutely insane chasing after you.

The weekend passed by quietly; strangely, Haruhi didn't call me to do anything related to the SOS Brigade. In fact, I didn't hear anything from Nagato, Asahina-san, or Koizumi, either; it was the first time I've had a weekend to myself in quite a while. I almost missed having Haruhi drag my ass around on a typical weekend. Almost.

Finally, Monday morning came around, and I was slowly making my way up that hill up to the school. Suddenly, I was slapped on the back by someone I was really hoping I wouldn't have to see.

"Morning, Kyon!"

Of course, it was Taniguchi, with a carefree smile on his face. It kind of annoyed me, with what I had witnessed on Friday; I'm sure he wouldn't be smiling if he saw what I saw.

"Morning, Taniguchi," I greeted him.

Well, at least the chat that proceeded distracted me for a while; I really needed to not think about what happened. That wasn't going to last forever, however; when we walked into the classroom (Taniguchi and I are in the same class again in our second year), a girl who had arrived before us caught my attention.

Ayano Aishi.

Aishi-san sat down at her desk and briefly looked in my direction; she gave me a menacing glare before turning away. At that moment, my mind suddenly flashed back to her killing Najimi-san and me witnessing it...

"Oi, Kyon!"

Taniguchi's voice, out of all things, ended up being what snapped me back to reality.

"Oh! What is it?" I asked.

"You okay, man? You just spaced out when Aishi glared at you like that," Taniguchi explained. "What the hell did you do to get her so mad, anyway?"

Ah, I guess this means he noticed her.

"It's nothing, really. There's probably just something behind me that she noticed," I lied.

"Well, if you say so," Taniguchi said with a shrug before walking over to his seat and sitting down.

I proceeded to do the same. Haruhi, who had actually arrived before me, poked me on the back and caused me to turn around. She seemed a bit...curious about something.

"What is it, Haruhi?" I asked her.

"I've been hearing these weird rumors since I got to school this morning," Haruhi answered. "I mean, a third-year apparently went missing on Friday."

Suddenly, I felt like someone had punched me in the stomach. I knew the exact story, but for her to find out something like this already... I need for her to steer clear of this.

"W-well, it's probably just a rumor," I lied, not looking at her. "I-I mean, that third-year could just be sick at home or something!"

Suddenly, at that moment, an announcement was made, and never in my life did I imagine the principal's voice would send chills down my spine the way it did.

"Attention, all students. We regret to inform you that one of our students - third-year Osana Najimi - is no longer with us. She has gone missing, and with there being no trace of her left, it's only safe to assume..."

I knew exactly what was next; it was the phrase that started it all.

"...that she is dead."