Author's Note: This is my first fanfic. I don't know how good this will be. I hope for the best. I'm not the best at descriptions so you'll have to forgive me. Some of these chapters also might be a little short.
Chapter 1: A Mysterious Number Hunter
(Three years after Don Thousand's defeat.)
Astral is thinking to himself inside the Empereor's Key looking at the Numbers. "I do not understand." he says to himself. "We successfully defeated Don Thousand, the Barian Empereors are human again and we have collected all the Numbers, regaining my memory in the process. And yet I sense something."
Then a mysterious voice exclaims out of nowhere, "I beleive that would be me." Astral turns around, and sees a figure in a black cloak. The only thing he can make out is the figure's bottom part of his mouth with half of it blue and half of it black. "Who are you?" Astral asks. "You don't need to know. The only thing you should know is those Numbers are mine!" The figure holds out his hand and uses a mysterious power to take the Numbers with them in his hand. Astral exclaims, "Give those back! They contain powers that you couldn't possibly understand!" The figure replies with a smirk on his face, "No I think not. In fact I think I'll be taking my leave from this place." Astral tries to go after the stranger but he is not fast enough for the figure teleported out of the key.
Meanwhile, Yuma is walking to school with his friends, when Astral comes out of the key and says to Yuma, "Yuma, someone has infiltrated the key and took the Numbers." Yuma stops his conversation immediately with Bronk and Tori and gives Astral a look of complete distress. "Wh-what did you say?" Astral replies, "Someone has taken the Numbers!" Yuma and Astral exchange looks of distress before they hear someone yell in agony in the distance. Coming from the school, Yuma runs to his school, Bronk and Tori following behind.
Then, they see Vector on the ground completely beaten and knocked out. Yuma then sees someone standing in front with a Duel Disk activated. He has short, brown hair, wearing a black cloak. He has blue eyes and gives off a very eery presence. Astral then realizes it's the same black cloak from the one who took the Numbers! The stranger looks at Yuma and says in a mischievous and cocky voice, "Well well hello there Astral." Tori, with a look of shock and sadness sas, "Wh-what happened?"
The stranger says, "Oh, don't mind Vector. He's just taking a little nap. The ones you should really be worried about are Yuma, Astral, and these four new Numbers I acquired." The stranger shows Number 104: Masquerade, Number 65: Djinn Buster, and their CXyz forms. Yuma exclaims, "Give those back!" The stranger replies, " Sure if you beat me in a duel." Then let's duel!", Yuma says as he activates his Duel Disk and Duel Gazer. However Astral steps in and says, "Yuma, are you sure this is a good idea? Remember you don't have Utopia or any of it's Chaos forms." Yuma replies, "It's alright Astral; I can beat him even without Utopia." The stranger says, "Yeah Astral let him have some fun. It'll be the only fun he ever has after this.", as he activates his Duel Disk and Duel Gazer. They both exclaim, "Let's Duel!"