As the Z Fighters and company entered the Cube and started heading towards Frieza's current location, Whis started explaining, "You see, the Super Dragon Balls, along with the Dragon Balls on Earth and Namek, they aren't meant to be used too often. They gather up negative energy with every wish, and when the negative energy levels raise too high, an evil dragon is summoned. Frieza summoned that dragon. From what I can guess, 17's wish during the Tournament of Power brought back so many lives, it filled the Super Dragon Balls with negative energy to the point where the evil dragon was summoned."
Beerus nodded and said, "And that dragon is a threat to the entire multiverse. Especially if Grand Zeno becomes aware of it." before shuddering in fear, "This happened because of a resident of Universe 7. As the Destroyer of Universe 7, that means that Grand Zeno will hold me responsible for any destruction that dragon causes."
Goku thought for a moment, and had an idea, "Hey, can't we just ask Zenny to Erase that dragon?"
Beerus cringed and yelled at Goku, "Stop calling him that you moron! His name is Grand Zeno! And how do you think he'll react if I tell him I screwed up and allowed a mortal in my universe to summon The Dragon of the Demons!?"
Whis cleared his throat and said, "We're here my lord."
Beerus looked away from Goku grumbling and said, "We're coming in, whether Frieza wants it or not." before Frieza came out of his ship
Frieza grumbled at them, "I should have known you insects would have found out eventually. Are you here to destroy me Lord Beerus?"
Beerus shook his head, "I ought to destroy you, but you caused this mess. You're going to help fix it! If you refuse I'll destroy you and every member of the Frieza Force who was involved with this stupid scheme of yours!"
Frieza clenched his fist in anger, hating to take orders, but calmed down, "Fine, I messed up. I'm only helping you so I can get revenge on that dammed dragon for cheating me."
Whis checked his staff and showed the group an image of what had been happening over the last hour or so, "It seems that The Dragon of the Demons released seven separate dragons, and they've destroyed 7,159,823 planets in only an hour. Do you see the severity of what you've done Frieza?"
The Z Fighters were shocked at how much destruction these dragons had caused in such little time, but none of them were as shocked as Frieza was. He stayed silent for a moment, shuddering. Vegeta noticed tears were welling up in Frieza's eyes, despite him trying not to let them leave his eyes, and laughed, "Ha! I never thought I'd live to see the day Frieza is in tears!"
Frieza shook his head, "Sh-shut up! I'm crying in frustration! I wanted to rule over the multiverse, and now I've practically destroyed what I wanted to rule!"
Goku calmed the two of them and said, "Regardless, even you can see how dangerous these dragons are if they've destroyed that many planets is such a short time. You're helping us, whether it's for revenge or because you actually feel responsible for all this destruction."
Frieza growled, but calmed himself, "Right, my men will make more Super Dragon Radars and spread out across the multiverse to tell where these dragons are. They won't stand a chance against them, so they'll alert us if they find a location on one of them." He thought to himself, "I've done evil things all throughout my life without so much as a flinch... so why do I feel so bad about this? I've killed millions of innocent people in my reign, and yet..." before shaking his head trying to dispel those thought. "Let's get going, we've wasted enough time talking when we should be looking for those dragons."
Goku nodded, "Frieza's right, we need to start looking for these dragons."
And so, the Emperor of the Universe realizes how much destruction he's caused, and while it's unclear if he feels responsible for unleashing the Divine Shadow Dragons, or if he simply wants revenge for not getting his wish, but he has agreed to fight alongside the Z Fighters once again in order to clean up the mess he created. But how will the other Gods of Destruction react when they realize that Universe 7 is the root of all this chaos? More importantly, how will Grand Zeno react? Either way, it will not be good.