Dragon Ball Multiverse

In 774 on Earth, two Saiyans warriors, among the most powerful in the universe, fuse thanks to the holy Potalas of the Kaioshins, and thus creating Vegetto, the strongest being of all times.
He accepted to obey the Kaioshins by gratitude, and was missioned in all the universe to settle conflicts and fight menaces.
...none survived.
He was quickly known in every civilized world as a great hero, or even as a God...
And as he trained, he took along two adventurous little girls...