The Sister Universe

After defeating Frieza, someone neither Goku nor Vegeta thought they'd see again, the two strongest saiyans in their universe went back to doing what they do best - training and getting stronger. They pushed each other to their limits and then some. Even so, they craved something new to test their power on - a challenge to give them a run for their money. Though, neither of them truly believed that such a person - other than whis or beerus - existed. So, imagine when their desire is answered coincidentally by none other than another god of destruction, who just so happens to be Beerus's brother. And he's looking to challenge his brother to a tournament using mortals to battle for them. This could be just what the two saiyans are looking for. But are they ready for what Universe 6 has to throw at them? Can the handle the shocking truth of what they will discover once the tournament beings? Only one way to find out.