Before Zeref created demons, there were demons already born. since the dawn of time, these demons roam Earth land in secret and hidden themselves away. Until one Human. One man, discovered them, his name was Zeref, The Black Wizard. He wanted control over these demons. However, it proved to be a grave mistake for the black wizard. every demon he encountered attack him and told him to go away.

years passed since then and demons decide to teach humans Demon Slayer Magic. these demons took only certain humans and train them in secret. most of the demon slayers join dark guilds. Others Die in Training. One day, The Demon Named, Raiju The Lightning Demon. Wanted to join the forces of good and if he was gonna train a human, he would train them to join the legal guilds. The other demons however, didn't like his idea and banished him far in the mountains where he would never be seen again. Until a Little white haired boy found him. this is where his story begins.

Raiju was laying in the cage sleeping, until he heard a noise. he opened his left eye and looked to his left. he sees a white haired boy with a Dark green right eye and a Dark blue left eye. Raiju opened his other eye and turned his head to the boy, getting a better look of him. the boy only wore a large torn rugged shirt that covered all the way down to his knees. the boy stood in fear for a couple of seconds, then he smiled at the demon. It took Raiju by surprise, Who was this boy?

Raiju stood up, he was as tall as a dragon. But looked like a Blue Wolf. he leaned in closer to the little boy. Making the boy jumped and fail on his ass. Raiju laughed.

"A little kid like you shouldn't be in the mountains." Raiju said to the boy.

The boy looked at him angrily. "Hey! I'm not a Kid!" The Boy pointed at the demon. "Are you Asking for a Fight!? Cuz I'll-" he was cut off when he was flicked in the head by the demon.

He sighed. "you're a rowdy one aren't ya? Do you honestly think you can fight the demon of lightning?" Raiju picked the boy up by his shirt. "I feel sorry for your parents. speaking of which, where are they exactly?" Raiju asked the boy

The Boy looked at the Demon with a sad looked. "I… I don't know…" He said.

Raiju pulled him closer to his face. "Is that so?" Raiju dropped the boy flat on his face. Raiju stood there in thought. "First things first. When were you born and What's Your name?" Raiju asked the boy.

"My Name is Draco Killswitch, I was Born on March 21st, x773, and I'm 3 Years old!" He said and smiled. "What's Your name Mr. Demon?" He asked.

The Demon looked at Draco with a annoyed look. "It's not Mr. Demon for one!" he shouted at Draco. "My name is Raiju! The Lightning demon!"

Draco looked up at him. "Ok ok! Nice to meet Ya!" he shouted back and laughed.

Raiju's eye twitched. "What's so funny kid?!"

"You're just like me." Draco said. Making Raiju's eye's widen in surprise. Draco pouted. "But don't call me a kid!" He shouted.

Raiju laughed now knowing that he found his Slayer. from then on Raiju took Draco under his care and trained him to be a Demon Slayer. Raiju told him stories about who his seen, What demons has he encountered, What Dragons he encountered, the dragon civil war, Acnologia, and what guilds he's hear about. he told Draco about all the dark guilds in the legal guilds. But Draco's mind was fixed on Dragons.

"Woah! Can I meet one of those Dragons someday? Huh? Can I!?" Draco got all excited from Raijus stories.

Raiju smiled. "Maybe someday. I'll probably let you meet the lightning dragon. Although, I haven't spoken to him in awhile. I don't think he's alive.." He said with a sad smile.

Draco stood up and put his fist up in the air. "Hey! if Dragons are as tough as you say they are, then I bet he is still alive!" He said with a smile.

Ruiju smiled. "Your Right. Thanks kid." Raiju said. Making Draco mad at him.

"I told you to stop calling me kid!" Draco throws a temper tantrum, making Raiju laugh his ass off.

For 3 years, Draco's training kept getting more advanced and more difficult but that was not a problem for him. at the age of 6 he learned hand-to-hand combat techniques and swordsmanship. Raiju was amazed with Draco's skills with a Sword. On Draco's 7th birthday, he was given a the new sword That Raiju made himself. it was like a knight's sword, but the blade was completely black and the handle was Blood red.

"Sweet! Thank you Raiju!" Draco said and hugged him.

Raiju sighed in annoyance. "What have I told you about the mushy shit?! I Don't like it!" he roared the last part, making Draco Fail over. Raiju sighed again. "I also got something else for you."

Draco stood up waiting for his other present. "You do? What is it!? Tell me!" Draco got excited.

"Just hold on! God…" Raiju turned around and pulled out a necklace with a skull on it. "I made myself, it took some time to get it the right size. but I think it'll do." He put the Necklace on Draco. "What do you think?"

Draco look at the necklace and smiled. "It's cool. Thank you." He looks up at Raiju. "I'll never take it off, I swear." He said making Raiju smile and patted him on the head.

2 weeks later.

Draco was walking back from a nearby town getting some new clothes, Raiju gave him money so he could buy Something for himself. Draco's wearing a red tank top, Black jeans, ordinary shoes, And his necklace. Raiju was waiting patiently for Draco, until he saw him out of the corner of his eye.

"Nice look. Who dressed you?" Raiju chuckled lightly, making Draco puff out his cheeks.

"Shut up. it was the only thing I liked." Draco stuck out his tongue in annoyance.

"I'm just saying-" Raiju was cut off when he senses something evil coming to them; Draco also sense it. Raiju stood in his a fighting stance. "Draco. Was anyone following you when you came back? Anyone suspicious to you?" Raiju looked at Draco and he looked back.

"No. No one at all." Draco said with concern but with excited at the same time. "I can finally show my skills to someone! Hell Ya!"

Raiju looked Draco with a serious expression. "Draco, I know you want to fight. But these evil beings I'm sensing are Demon's just like me. I'm NOT going to let you get hurt in front of my eyes." He said.

"What!? That's Bullshit! What if they have Slayers!? I want to Fight! you didn't train me for nothing, I'm not a kid anymore! I'm going to fight whether you like it or not!" Draco said and also stood in his fighting stance.

"disobedient little.." Raiju wanted to be mad at him but he was right. Raiju nodded. "Fine…"

Draco smiled and waited for the enemy to come near them. two demons emerge from the mountains, a Smoke Demon, a Wind Demon, and their Slayers. they both landed and looked at Raiju and Draco. The Slayers got down from Their demons and looked at Draco.

"It's been awhile." He looked at the smoke Demon. "Hazel." Then he looked at the wind demon. "Adam. why are you two here?"

Hazel began First. "We came here to challenge your Slayer with ours." She explained, then Adam stepped in.

"To see Who is the strongest Slayer. Then We'll leave." He said, making Raijus eyes widen with surprise and anger.

"What is this!? What game are you playing!?" he shouted in anger at them. They just smiled.

"No games, just a Slayer Fight." Hazel said.

"That's Fine by me!" Draco said with fire in his eyes. "I'll take both of your Slayers on!" he pointed at Hazel and Adam. The Demon's smiled.

"He's just like you Raiju." Adam said and laugh. Raiju just glared at them.

"kick their asses Draco." Raiju said.

Draco smiled and cracked his knuckles. "Let's get this Party started!"

What do you think?