I don't know what happened. The last thing I remember is that I was crossing the door to go to work, and the next thing I knew was that I was surrounded by hundreds of people all wearing white tunics, knight silver helmets, and holding swords. Under the tunics, I could grasp what it looked like armor with a weird coat of arms I had never seen before. I worked as a history teacher's assistant. I am fascinated by all secret societies, and in 30 years of living, I have never seen these strange symbols.
I looked at my surroundings, I realized I was at the bottom of a pit approximately 20 meters long. These knights are guarding the stairs that could take me to the top. I have watched many animes and played more games than someone 'normal' could count, so I know what is happening here. I have been summoned to another world, probably to become their hero and save the world. Someone from the top throws me a sword. They are valuing whether I can defeat the warriors who are keeping me here, or if they will kill me first. Luckily, I practiced swordsmanship when I was in high school. Call it destiny or luck, but this skill will be useful now.
I am not dying in this place, so I'd better clear this up now. Every knight is taking a fighting position. Good, they are ready to fight, so am I.
I don't know how many hours have passed or how many knights I have killed. I was called a genius back in high school. Everything I have learned since I was born has led to this point. Maybe this is what they call luck or destiny.
I reached the top of the pit after killing every knight down there. A saint receives me in what looks like an ancient castle. She explains how their world is about to end at the hands of the demon king, etc. A typical isekai. She gives me a 'holy sword' and a 'holy armor' to defeat the demon king. She entrusts me with the salvation of her world.
After a few months of training and defeating monsters, I am standing in front of the demon king, whose name is Sathurn, with the help of a party that I created during this journey.
The demon king's appearance could be described as a typical emo boy with some skeleton accessories. He doesn't look like something special to me.
My group is ready to fight the demon king, but I have a better idea. I kill all my companions without hesitation. Sathurn is surprised and asks me why I did that. I am answering while covered in the blood of my late 'friends', "They were thinking of betraying me, same with the saint who summoned me here, and all the people who live in this world. I have no proofs, but I have no doubts either."
I explained to him that in my world, the hero is always betrayed by the people who are supposed to save them. That's why I did what I did. I want to join you in taking down humanity. I want to see what happens when the 'bad guy' wins.
"Why should I trust you?" Asks Sathurn. "You shouldn't. We could fight right now to the death, and the winner takes control of the demon army and takes down humanity. But let me ask you this, 'Are you sure you can defeat me and lead your army before the saint summons another hero to defeat you? One who will probably be naive enough to fight for the ones who will betray them at the end?
Sathurn hesitates at first, but he takes my deal. I gave him information about the saint's castle, and together we killed the saint and all her subordinates.
Our army advanced, destroying everything on its way. Men, women, kids, and animals are wiped out of existence. Saturn and I are at the top of his castle, witnessing everything. 14Please respect copyright.PENANA36nU6urkxp
After a few years of destroying and killing, humanity has been wiped out of the world. Not a single fragment that reminisces about humans has been destroyed. In a few centuries, no one will remember humankind. Sathurn cursed me with an immortality spell so we can see how the new demon realm progresses.
Two centuries after the war between humans and demons, the demon civilization has progressed significantly. The world is at peace. No discrimination, racism, or slavery.
The old world used to think that demons were uncivilized monsters, but in reality, they mix magic and science to discover new ways to improve demons' lives and explore new worlds. Sathurn is working in a way to send me back to my world. We may have worked together for demons' sake, but the truth is that we are aiming for each other's throats daily.
Humans are always the same, no matter what kind of world we are in. I am very sure the outcome of this 'perfect world' would've been different. It makes you think who is the real villain is in heroes' stories. 14Please respect copyright.PENANAnex0TxLzac