It all fell down ~ Demon Slayer Fanfiction

Prologue

(Fun fact:  I had the last volume of the manga next to me while I was writing this.)

"Tanjiro Kamado... you will conquer the sunlight and become the strongest demon— the king of demons!"

Sobs were heard among the Demon Slayers, Hashira, and the Kakushi as they see the body of a boy in front of them. Tanjiro Kamado.

"That is because you are the elder brother of Nezuko Kamado and thus share her blood. And you are the only one able to use the same breathing techniques as that monster."

The Water Hashira, Giyu Tomioka and a few other Kakushi stared at Tanjiro's body, as they all processed what had happened. Giyu clenched his fists. How could he let this happen? He saw Tanjiro as a brother. He knew Tanjiro had a hidden rage when Muzan came. Despite that, he had a kind heart.

"Tanjiro. Make my dream come true."

Suddenly, the boy's eyes had slowly opened his eyes. However, they weren't the same gentle and kind red eyes that everyone had seen. They were different.

"You must destroy the Demon Slayers in my place!"

They were almost... demonic like.

After Tanjiro had opened his eyes, the others had stared at the boy with confusion. Suddenly, an arm had suddenly come out and it was coming towards one of the Kakushi. If it weren't for the Water Hashira, the Kakushi would've been dead at that moment.

"Don't just stand there! Get back!" Giyu had shouted, as he draws his sword. "Anyone who can still fight, grab a weapon and form up! Tanjiro's not the same anymore!" He had continued to shout to everyone else.

This had caught the attention of the others, who were badly wounded, and on the verge of death. However, Giyu wasn't done speaking.

"Tanjiro's become a demon! Keep him under the sun and burn him! Kill him before he kills anyone else!"

The demon boy was about to start running. However, Giyu was quick on his feet, and stabbed his sword into Tanjiro's side. He couldn't let him into the shade. Not this time.

However, Giyu had noticed another thing. The burning on Tanjiro's skin. It had suddenly stopped. With lightning speed, Tanjiro raised a hand, about to attack Giyu. The young man had dodged in time, but his shoulder now had a severe injury.

Suddenly, another attack had come in. And it came from a boy with a boar's hide. He was around Tanjiro's age. "What're you doing?! This is the guy with the half and half haori! He's our ally!" He had shouted.

"Tanjiro!" Another boy had yelled. He had yellow hair, and his yellow haori was almost completely torn. He was holding onto a Kakushi by the arm due to his wounds.

Tanjiro's appearance had completely changed. His uniform was still there, but one of his sleeves had been torn, and his eyes had changed. His fangs had shown, now that he had become a demon.

The yellow haired boy, Zenitsu Agatsuma, and the boar headed boy, Inosuke Hashibira had paused to process what was going on. Tanjiro was no longer burning within the sunlight, and almost everyone around them was on the verge of death.

"No one... no one can fight anymore. We're all beat up... this is awful." Zenitsu had mumbled under his breath. He had a tearful look on his face. He usually was seen crying by everyone. However, his emotions were more genuine during a battle like this.

"What about Nezuko... Tanjiro? Your sister..." He had mumbled out loud. He had taken notice that Inosuke had jumped in to attack. However, it was too fast, as Tanjiro had fought back, and aimed his arm towards Inosuke's face.