Fantasy

Adam's life was a living hell, which finally ends when he is killed by his enemy, John. But this is not the end for Adam; rather, it is a new beginning.
    He travels back in time to the exact point where everything started—the time he left college.
    However, this time is different. He has received a 'System' that grants him the power to 'copy and paste,' allowing him to duplicate any object and paste it into the real world.
    From here begins Adam's ultimate revenge against John and his family.
    Alongside his vengeance, Adam uses his power to build his own massive business empire, which becomes so wealthy that it even funds the government.