I got a good idea so I made this. The very first Tensei Shitara Slime Datta Ken fic with dark themes.

Enjoy.

It was a rainy day.

I'm currently walking to my school, water splashed as I continued on my way without minding the puddles of water.

"How annoying..." I said out loud, the weather was nice, no irritating sunlight, and yet I still needed to go to school at this day.

Truly, how very annoying.

I glance at the streets, there aren't many cars around. I turn my eyes forwards. The rain was blocking most sounds, particularly the voices of other people.

It was nice. I really hated those loud and worthless teenagers. Laughing at every little and stupid joke even though their voices were worse than a screeching banshee.

I'm surprised that I haven't killed anyone yet.

I stop, I finally arrived at my school.

I look around, seeing no students. I shrug to myself and went through the school gate. My classmates were probably already inside the classroom.

...

I put down my umbrella, I push the door and went inside my classroom, my classmates were there, but at least half were gone.

I click my tongue in slight annoyance. I shouldn't have come. Now I just wasted at least 8 hours of my life. How fucking great.

I sit down at my chair and waited for the teacher.

Though it seems like the teacher wouldn't arrive as suddenly-

Bang! Bang! Bang!

"Drop down on the ground, motherfuckers!" Screams erupted around me as my eyes slightly widened in surprise.

Hm, I guess this day wouldn't be too boring, it seems.

"I said drop, motherfucker!" The man, or rather, a student with bloodshot eyes shouted in warning as he brazenly entered the room. The student was around 16 years old, he probably used some drugs. He then fired his gun at the ceiling as the screams quieted down and my classmates shakily dropped on the ground.

I follow their example, though this situation is interesting, it annoys me that he thinks he can just pull this shit on the classroom that I was in. Perhaps I should teach him a lesson.

"Alright, you piece of shits, follow me to the library, and don't piss me off or I'll shoot you in the face!" Library? Hm, he probably wants to gather the students, or perhaps the teachers as well, in a single area. You can guess why.

This might mean that he has accomplices, no, it does mean that he has accomplices. If he didn't have any, he would probably shoot at anyone he sees, or something similar, anyways. So, a school shooting, though I don't really care about the reason.

Still, this worthless trash is an utter fool, I could come up with several plans better than this in two seconds. It doesn't help that he's on drugs.

Well, no point in dilly dallying, I'll just end this fool.

As the worthless trash turned around, I stood up and slowly walked towards him. My classmates were shocked at this but it seems like they weren't idiotic enough to shout at me at what I was doing.

"Wh-" As the worthless trash turned around to me with his gun in hand. I crouched down with speed, the trash aimed to shoot at me but I grabbed the muzzle and moved it towards another direction. Before the worthless trash could do anything else, I uppercut him in the face and then kicked his stomach.

The worthless trash fell down with a pained expression as I held his gun, it was an assault rifle.

A damned assault rifle.

This will be fun.

"Ugh." The trash groans in pain and tried to stand up but before he could continue anymore - I turned the rifle to his face, and fired.

Bang!

A single, but loud shot was heard as blood splashed to the walls and at the ground. His entire face was bleeding. He said he'll shoot someone in the face so I did just that.

The trash fell down with a thud, a puddle of blood was forming underneath his body.

...

The room was so quiet that you could have heard a pin drop.

"Well then," I turn towards my classmates with a neutral expression, uncaring for the seemingly violent and cruel action that I did.

These guys annoyed me more than once with their stupid and useless chatter. So-

"Bye." I switch the assault rifle to automatic as I pulled the trigger.

Then loud screams and gunshots erupted.

The room was now silent, only drops of blood could be heard in the room.

Bodies were littered everywhere, full of holes. The room's other side was entirely painted red.

Now, you might ask, why? Why did I murder all of my classmates?

It's simple, really. They just annoyed me more than once in the past. I wanted to kill them before but I found it to be too much of a hassle, so I just dropped it.

Today, I was given a chance, so I just took it. Besides, I won't get caught since there are no security cameras. The rooms were also practically soundproof, foams are cheap but effective. Well, that was one of the reasons why I applied for this school. Because if I suddenly wanted to murder everybody, they wouldn't hear me, and I could easily trick people that It wasn't me. Courtesy of being a little bit smarter than others.

I turned towards the door as I looked at the worthless trash's corpse. It was my first kill, but I didn't really care. I felt nothing, there was no guilt, no sadness, no regret, no satisfaction, no joy. Absolutely nothing.

It's what you would feel like if you crushed an ant. Nothing. Its life was worthless and insignificant, why would you care about it?

I turn my eyes back towards the front, I needed to kill some more worthless trash. Particularly, this trash's accomplices.

...

...

...

I have arrived at the entrance of the library. Since the door was glass, I could see what was inside. The people inside couldn't see me, however, since the view was one-sided.

On my way here, I already murdered around two more worthless trash. The fools' aim was worse than an amateur. It didn't even take a second for me to end their worthless lives.

I reload my assault rifle as I waited for the other fools to show up at my line of sight. I could see around three more trash with guns aimed at the dozens of students and a few teachers.

The library was big, it would be a hassle to find the other accomplices in the maze of shelves. The students and teachers were at a big and open space so murdering them would be easy.

Yes, I plan on killing them too. Why? Well, that's because murdering almost everyone on my school would make it shut down. I wouldn't have to go to this worthless place, at least until I got applied to another school, school's boring, anyways. I'd rather watch anime or play some video games at my house, at least those weren't as worthless as the trash everywhere on this planet.

Oh, there they are.

I could now see around 8 trash with guns. They seemed to be discussing about something. Not that I care, so, now that they're all here-

I pulled the trigger.

"Die."

A loud noise flooded the room instantaneously, the glass cracked and exploded to fragments as a hail of bullets rained down on the unlucky fools.

The screams of the students were drowned out by the loud noise that the assault rifle was producing.

Click! Click!

The assault rifle turned empty, but it didn't matter. The trash were now dead. Full of holes.

"Tch." I clicked my tongue as I felt my bleeding ears, I was used to loud noises but it seems that even I couldn't handle an assault rifle being fired at close range.

I reload my assault rifle as I entered the library. Stepping on broken glass as I walked inside.

I turn my view to the students, a dozen of them were injured from what I did. No one seems to have died, however.

Oh well.

A sudden sound brings me out of my thoughts as my head snaps to the source.

It was the sound of footsteps.

"Hm..." I slowly walk towards the sound with my weapon in hand, an accomplice of them might still be alive.

I slowly follow the sound to the maze of shelves while keeping a close attention, the footsteps were becoming louder by the second.

I turn around the corner. He should be here-

A sudden click made me freeze in place. "Stop right there, you bastard." Damn it all to hell, I got careless.

I slowly turn my head to see the new arrival.

It was a guy, with a rifle. He didn't seem to be using drugs like the fool before, or it didn't at least be visible.

"..." Even though a gun was aimed at me, and I was cornered, my expression was still that of indifference. I didn't really care, to be honest. My thought of this would be more of how one would be like if they suddenly got killed in a fps than anything dramatic.

I mentally sigh as I slowly turn around and face my 'attacker'.

"So... Wh-" "You fucking piece of shit! You killed them! Who the hell do you think you are!?" The man shouted furiously as he pointed the gun at me with shaking hands. Ah, this ain't good, is it?

"What ever do you mean? You were the ones who instigated this foolish idea. It was merely an act of self-defense." I calmly say as I readied my assault rifle.

"WHY YOU-" He got cut off as several armed men brazenly entered the room, it was the swat team.

"Go go go!"

"Shit!" The accomplice (trash) panicked, I didn't have to do this but I will not stand to being threatened by this fool.

Before the s.w.a.t team could come to us, I suddenly turned my assault rifle, finger at the trigger. This fool would die.

"Shit!" A loud gunshot erupted as the accomplice fell on the floor. Serves you right, fool-

I widened my eyes in surprise, my bullet missed and only grazed him. "Y-You bastard!" He turned his gun to me and - fired it.

A loud sound filled the room for an instant as a single cartridge of a bullet fell on the floor. The gun's muzzle had a tiny wisp of smoke, the gun was fired.

I was shot.

"Gah." Blood came out of my mouth as I staggered and fell on the floor with a hard thud.

I was bleeding all over the place.

My vision became blurry and I felt like I would fall asleep at any second. I could barely recognize the swat team arriving and apprehending the trashy accomplice who shot me.

I'm... dying, huh?

My vision was fading and my body was becoming cold.

Is this where I would die? Killed by a worthless fool just because I decided to try and kill school shooters way too nonchalantly.

Hah... even though I'm dying right now, I don't even feel anxious, frightened or even mad. It seems that my emotions slipped away without me even noticing these past years. I remember when I was an ordinary kid, naive and happy all the time. I wonder what happened for me to change so much... for my emotions to become this way...

...Emotions, huh? I guess that's why I'll die here. It's because I barely have any emotions, if not, nothing at all. I lacked fear, so I stood up to the trash without so much as a care in the world. Though I lacked fear, I wasn't brave, being brave means that you have the will to surpass your fear and withstand the suffering and pain. I just didn't have fear, I can't surpass something I don't have.

[Confirmation Complete. Constructing a 'blank slate'...successful.]

It's because that I don't have fear nor bravery that I died right here. If I had the ability to feel fear, I would have been more cautious and careful, choosing to try and hide much more, instead of boldly walking to the trash (shooters).

[Confirmation Complete. Constructing body with human physiology... successful.]

If only I had emotions, I wouldn't have died here. If I had sympathy, I wouldn't have mercilessly killed the trash (shooters) without batting an eye, maybe I would have called the police immediately. The police force would be here and I'd be safe, instead of dying on the floor.

[Confirmation Complete. Acquiring extra skill [Create Skill]...successful.]

If I survive this, then I think I'll change. Reform or something, though I don't think I'll ever become a goody two shoes or even half of a decent person, I'll try to change, for...'the better', if you will.

[Confirmation Complete. Acquiring unique skill [Shapeshifter]...successful.]

If I survive this, huh? Who am I kidding, I'll just drop dead right here. Being shot in the heart is not exactly something you could survive from. Bloody hell, I should have dodged that stupid bullet, even if it's probably impossible.

[Confirmation Complete. Acquiring extra skill [Probability Manipulation]... failure.]

My eyes shut closed, my lungs and heart were now shutting down. It seems like I was gonna die.

I mentally sigh as I had one final thought in my mind before I died.

"What a waste."

Author's Notes:

Now, since I'm a Panster kind of writer (Someone who plans very little), I'm unsure which arc I'm going to place the MC in. So, if you guys could tell me which arc the MC will arrive in then the next chapter will be released much faster. Of course, if the suggested arc is not to my tastes then I won't do that one, regardless of the amount of votes.

Just write a review and it would really help me in giving me motivation as well as making the story improve. Even if you do not have an account, you can still write a review but only as a guest, however it is still very much appreciated.

If you like the story or not, please tell me. So that I can improve anything that is not satisfactory.

PS: If you've watched the anime or read the manga then you'll know that the unique skill [Shapeshifter] (Or also called [Deviant]/[Degenerate]) is one of Shizue's abilities. Before you could say that you can't have another unique skill of the same name, it's actually possible. But every unique skill is different even if it only has a minor difference.

PPS: Please go to my profile page so you can vote which arc the main character will arrive in.