Do the Shadowbolts and Dazzlings appear in this story series?

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No. Given that they are stuck across the portal and since Sunset didn't go there, they have no way back unless they stumble through the portal.

Sam shook his head “Thirty didn’t survive, some haven’t awoken yet, some have been damaged. John and Kelly are alive, just recovering from the Augmentation.”

Wait? Couldn't Sunset just use her GOD-LIKE Powers to revive the deceased, wake up the coma's, and heal the injured?

She healed Twilight, so why not them!?

Sorry, but this is a bad plothole when you have a god-like being on your side?

Twilight raised an eyebrow “You enjoyed slaughtering demons.”

Sunset frowned “Demon were created for sheer purpose to cause destruction. I was destroying living weapons, besides I enjoy the thrill of being challenged. I hold back in sparring sessions to get the best fight out of it. As for control, that will wait until after augmentation procedures, then I will become your personal partner for training you to control your strength.”

Sorry, but this is another dumb question that Twilight has said.

She does realized that the Demons are a different story.

Not only they already killed over hundreds of trillions of sentient life and conquering/corrupting planets in the past, and billions of humans in both Earths.

Those Demons deserved to have a taste of their own medicine by getting Ripped and Teared.