Bulma, Gohan and others in “Unfinished Business”

(After Shenron appears without summoning) So, Shenron appears before us without being summoned? That's never happened before. I mean I've never heard of him doing this kind of thing.

Yeah, and doesn't the sky usually cloud up and turn dark?

Now, arise Goku. (Sheron heals Goku)

Goku, you're alive!

Shenron, you're here? So, all of the Shadow Dragons are gone.

Yes, but do you know why they ever had to appear at all?

Kind of.

The Dragon Balls were overused. Following the mirage of enemies from your past, a final wish was made causing the balls to crack under the pressure of the negative energy. The Dragon Balls were intended to be a thing of extraordinary magic and power, something to be revered, not for the ease of their method, but for the dream of never having to use them. I'm afraid now I must separate myself and all of Earth from the Dragon Balls for a long time.

I gotcha. But I was wondering if for old times sake, you wouldn't mind listening to just one more little request I have?

One last time.

After the hole to Hell was opened, the Earth had no time to recover before the Shadow Dragons started destroying even more. Some many people have died. If this is anyone's fault, it's mine. I take full responsibility. I just wish that the people of the world didn't have to die for nothing. The fight was never theirs to win or lose, but they all lost anyway. (Everyone looks in confusion).

This. Your final wish is granted. (Shenron grants Goku's last wish)