Disclaimer: I don't own Yu-Gi-Oh or anything else.
This story is a AU, although it does take place in Domino and Kaiba is still rich, but everything else is AU.
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Chapter One
Birth Of A Vigilante
In a city called Domino the sun was beginning to rise. A large mansion sat in darkness until the sun came up. In a large room and young man around eighteen rubbed his eyes as he woke up.
The man had short chesnut hair and cold blue eyes. The man sat up and cracked his neck to wake himself up. This was Seto Kaiba, multi-billionair and Kaiba corp owner. Kaiba streched and exited his bed wearing only black pants and a black tank top.
Kaiba walked into his bathroom and turned his sink on. He brushed his teeth and then washed his face with a rag. Kaiba then walked out and over to his closet. He withdrew some clothes and began putting them on. As he did his door cracked open and in walked a short boy with a mess of black hair.
" Seto," the boy yelled. Kaiba walked out of his closet wearing a black trench coat, black shirt, and black pants.
" What is it Mokuba, I have to hurry," Kaiba said. Mokuba smiled and placed a huge bag on Kaiba's bed and then jumped onto the bed next to it.
" I bought you some gifts yesterday Seto, I just wanted you to open it before you left for work," Mokuba said. Kaiba put on a small smile and walked over to his younger brother. Kaiba opened the bag and withdrew a few items.
The first was a full Ninja Shinobi uniform, the second was a long Katana, and the last was two throwing stars." I remembered how much you liked to study about Ninja's so I went and bought you a few things," Mokuba said smiling.
Kaiba studied the items and drew the katana out. He ran his finger down the blade and felt how sharp it was. He looked at his finger and watched a thin line of blood run down it.
" Its a good sword and the uniform is an exact replica, thank you Mokuba," Kaiba said hugging his brother.
" Your welcome Seto, how about you try it on and show me some of that karate you've been learning ," Mokuba said. Kaiba shook his head no and placed the stuff down.
" Not now, but when I get home I will okay sport," Kaiba said ruffling Mokuba's giant mane of hair. Kaiba then got up and grabbed his black briefcase.
" I'll be home around nine tonight, Roland will be here," Kaiba said. Mokuba nodded and watched his brother leave. Kaiba walked down the stairs where a green haired man waited.
" Roland I'll be home a nine, make sure all the doors are locked before night fall," Kaiba told his butler.
" Yes sir and have a nice day," Roland said bowing. Kaiba nodded and walked outside to his waitining limo. He entered it and drove away from his manor.
As Kaiba left two men sat inside some bushes outside his mansion." There it is the Kaiba manor, tonight we hit the jackpot," one man said. The two began laughing and quickly ran away from the mansion.
Kaiba corp. 9:05 P.M.
Kaiba rubbed his eyes as he typed on his laptop. His blue eyes glanced at his watch and he sighed." Great I broke another promise to Mokuba, so much for making home at nine," Kaiba said.
He then heard his office door open and he looked up to see his secretary standing in the doorway. Kaiba's secretary was a young girl who stood about 5'2 and had long red hair and amazing hazle eyes.
" Mr. Kaiba its past nine and I'm leaving for the night," the girl said.
" Has everyone else already left too, Serenity?" Kaiba asked.
" Yes sir everyone but you and me," Serenity answered. Kaiba sighed again and shut off his computer. He then grabbed his briefcase and walked out of his office.
He then walked to the elevator with Serenity next to him." So Mr. Kaiba may I ask how is your younger brother doing?" Serenity asked.
" He's fine beside that he is failing Biology," Kaiba said.
" I know what you mean, Joey is failing almost all of his classes," Serenity laughed. Kaiba let out a little chuckle. The elevator stopped and the two walked out of the black company.
" I'll see you tormmorow Mr. Kaiba," Serenity said. Kaiba then watched as she walked over to a small car and drove away to downtown Domino where she lived with her brother. Kaiba entered his limo and told the driver to take him home.
Kaiba Manor
Mokuba sat in his room doing his homework. He looked at his clock and sighed, his brother was never home on time. Mokuba gave up on his Biology homework and dicided to head downstairs and get a snack.
As Mokuba headed out of his room he heard the front door being broken into. He then heard it get slammed open. " Who the hell are you?" yelled the voice of Ronland.
There was then three gunshots and Mokuba froze. " Search the house, if you find anyone else, kill them," a man yelled. Mokuba then stopped and heard footsteps coming up the stairs.
Kaiba sat in his limo as it pulled up to his mansion. Kaiba smiled and exited his limo as it pulled up. He then stopped when he saw the front door wide open. Kaiba froze and then ran inside his house with his limo driver behind him.
Kaiba ran inside and stopped at what he found on the floor. His butler Roland laid face down on the tile floor which had turned a crimsion red due to Roland's larged amount of blood that had poured out of his three gunshot wounds. Kaiba then heard more gunfire and looked up stairs.
" Mokuba," he said and ran up the stairs. Kaiba made his way to Mokuba's room. Kaiba threw th door open and found two guys jumping out of the window, but thats not what caught his attention the most, what did was his little brother's gun riddled body.
" Mokuba," Kaiba yelled and ran up to his younger brother. Kaiba turned his brother's body over and closed his eyes. His brother's body was a bloody mess. Kaiba gasped for breath and turned his head. Silent tears ran from his blue eyes and down his cheek.
Kaiba used his hand and closed Mokuba's sacred open eyes. Kaiba's fist's clenched closed and he squeezed hard until blood ran from his hands. Kaiba rose and ran to the window and saw two dark figures running across his yard. Kaiba was about to jump out the window but stopped and ran to his room.
He grabbed the gifts Mokuba gave him and threw them on. His window then opened and Kaiba jumped out in his black ninja outfit starightening his mask. He then jumped to the ground below and ran in the direction the men ran.
In an alley not far away the two men stood laughing." Did you see that old man's eyes as I drew my gun," one man laughed.
" Yeah that was funny, but not as funny as how that little brat looked when I drew my gun on him," the other man laughed. The two laughed so much that they didn't spot the shadow on the roof above them. Kaiba's blue eyes visible through a slit in his mask narrowed and glowed with anger.
He readied himself and leapt from the roof. He fell and carefully landed onto one man. Before th man had time to react, Kaiba grabbed his neck and and twisted it until he heard a loud snap. Kaiba then rose and looked at the other guy who had drawn his gun.
" Who are you?" the man said.
" Your worst nightmare," Kaiba answered and ran at the man. The man jumped back and shot at Kaiba. Kaiba saw this and quickly jumped onto the wall dodging the bullets. He then jumped from the wall and landed infront of the man.
The man dropped his gun and fell back in fear. He backed away as Kaiba walked towards him his blue eyes glowing in the dark. " A demon," the man yelled.
" Whats wrong, you were so brave when you killed my brother," Kaiba said.
" Stay away, stay away demon," the men yelled. Kaiba reached and drew his sword from his back and walked forward. He grabbed the man by his hair and lifted his head up.
" Your right I'am a demon, a demon out for revenge," Kaiba said. He then quickly ran his blade across the man's neck and watched as blood sprayed from the wound. The man fell back and gurgled on his own blood. Kaiba flipped his sword around and then plunged it into the man's chest.
The man's body shook like a worm on a hook and then stopped. Kaiba withdrew his sword and then wiped the blood off of it. He sheathed it back and then ran down the alley disappearing into the shadows.
Mokuba's Funeral ( Next Day)
Kaiba stood alone in the Domino cemetery as he watched his brother's casket get lowered into the ground. Kaiba stood there watching with his blue eyes showing no emotion. Wind blew his black coat and made his bangs sway.
" Kaiba," came a quiet voice. Kaiba turned his head and narrowed his emotionless eyes on little Serenity.
" I'm sorry, for what happened," she said her eyes almost in tears. Kaiba grunted and walked past her.
" Save your pity for some who cares bitch," Kaiba said letting the last word come out in a sharp tone.
" Please Mr. Kaiba don't act like this, the killers will be found and brought to justice," Serenity said trying to calm Kaiba down.
" No the killer will find no justice and neither will any other criminal in this city, and as for calling me Mr. Kaiba don't as of now everyone is fired and Kaiba corp is closed," Kaiba said.
" But Kaiba you can't do that, think of all the people who work for you," Serenity pleaded.
" I don't care, they can all die of starvation for all I care and as for you, leave me the hell alone," Kaiba spat out walking away.
Serenity lowered her head and placed some flowers on Mokuba's casket. " You little brother would not like to see you like this," Serenity whispered so Kaiba wouldn't hear. She then watched as Kaiba entered his black car and drove away full speed.
Kaiba sat in his abandonded company at night placing his ninja suit on. He then placed his sword on his back and looked out his window of his once office. " My vengeance won't be settled until every criminal in this city is dead," Kaiba said.
He then opened his window and looked down at the city. " Watch out Domino, here comes the Blue Demon," Kaiba said. He then jumped out his window and disappeared into the shadows.
End Chapter
Great first chapter, I know theres some grammar errors and yes Kaiba knows ninja techniques from taking karate and reading about them and plus he knows how to be one because this is a fanfiction.
Please Review