A Monster Against Demons

Introduction

During the Taishō era of Japan, creatures named Demons stalk the world. However, a group unrecognized by the government protects the world from these beings. This group is called Demon Slayer Corps, and the Demon Slayers kill demons in order to ensure the protection of humanity. Some Demon Slayers possess "Breathing Techniques", which are supernatural powers that assist and aid in the defeat of demons. Demons possess a great weakness to sunlight, and all Breathing Techniques branch out from the first Breathing Technique, called Sun Breathing, or Hinokami Kagura. But enough with the Demon Slayer recap, let's go on to the actual story.



During the busy streets of Japan, an unnatural sight occurred. A man fell down from the sky seemingly out of nowhere, near a bench. He was known as Garou. People looked confused at the man, and one offered to help the man up. The man, however, swatted his hand away and looked around at his surroundings. Where was this?, the man thought. He knew he was somewhere in Japan, but nowhere he knew looked this.. lively and bright. It was fascinating, however, this part of Japan also looked older than what the man was used to. Perhaps he was sent in the past? He walked around aimlessly, trying to get more information about where he was. However, a nearby man wearing a green and black haori approached him, acknowledging that the man was confused.

???: "Hello sir, by any chance, do you need help to get to where you're going? You seem lost."

Garou: "I'm fine, kid. Although.. I would like to know where I am right now."

???: "You're in the capital city of Tokyo, Asakusa, mister. Do you not know how you got here?"

Garou: "Look, you wouldn't believe me even if I told you. Also, what's with that sword on your side?"

???: "Ah, well, I'm a Demon Slayer, I work for the Demon Slayer Corps. My name is Tanjiro Kamado, nice to meet you, sir!"

Garou: "Demon Slayer? The hell is that?"

Tanjiro: "I.. slay demons?"

Garou: "..."

Tanjiro: "I know it's hard to believe. Demons are indeed real, and it's my job to protect you and everyone else from them."

Garou: "..what's a Demon?"

Tanjiro: "You know, those beings that your parents told you about to scare you? The ones that eat humans? Those are all real, but don't worry, sir. I promise that you'll be fine as long as we're here!"

Tanjiro then smiles at Garou.

Garou: "Interesting.. I don't need your help, kid. I can handle these so-called "Demons" by myself."

Tanjiro: "Well, I don't think-"

A yellow-haired boy calls out for Tanjiro.

???: "TANJIROO!! COME ON, WE HAVE TO GO DO OUR MISSION!!"

Tanjiro: "Oh, uh.. coming, Zenitsu!"

Tanjiro looks at the man and then walks away.

Garou continues wandering around the streets, with his newfound knowledge of Demons.

It is now nighttime, when Tanjiro said demons would be present. Garou figured a dark forest or alleyway would do. He strayed towards a large forest, keeping his eyes out for any demons. Suddenly, a rustle could be heard in the trees. Garou immediately took a fighting stance to where the noise came from. Sure enough, it was a demon. It had six eyes, a wide smile, and its arms were grotesque-looking. It looked creepily at Garou.

Demon: "Oh.. another one of my prey, huh? I'm sure you taste amazing..

Garou: "Let's see what a demon has to offer."

Garou dashed towards the demon, his fists covered in a blue aura. However, the demon merely snapped it's fingers, and spikes protruded out of the ground. Garou came to a full stop before his body took any damage.

Garou: "What the.."

Demon: "Hehe.. you know what a Blood Demon Art is, right?"

Garou: "..Blood Demon Art?"

Demon: "My, you're even more clueless than I imagined, human! No matter, you'll still be delicious~"

The demon snapped its fingers multiple times, with spikes coming out of the ground and attacking Garou every time he did. Due to Garou's extreme speed, he was able to dodge most, if not all of the spikes. Finally, he came close enough to the demon to attack.

Garou: "Whirlwind Iron Cutting Fist.."

Garou let out a chop toward the demon's head, decapitating and immobilizing it. The head flew off nearby. However, the demon was not dead.

Demon: "Hehe.. you think only fists and raw strength can kill a demon? You don't even have a Nichirin Blade! At this rate, you'll NEVER kill m-"

Garou grabbed the demon's head and threw it far into the abyss of the forest. The demon's body began to stand up however, and it charged towards Garou.

Garou: "Water Stream Rock Smashing Fist."

Garou let out a barrage of several aimed punches toward the demon's headless body. With one swift blow, the demon was knocked away, destroying several trees in it's wake. The demon retreated, running away to report to Lord Muzan. Garou saw this and smirked.

Garou: "IS THAT THE BEST YOU GOT?!"

That was indeed, the best the demon had, as Garou was left alone in this eerily dark forest.

He roamed a bit, searching for more demons, but unfortunately, there was only one demon in this area, and Garou scared him away. And so, Garou left in search of a place to stay.