Reborn as an Ascended Being

There were twin realities, Earth and Aetheria existing on the opposite sides of the universes. Both of them were from the same roots, but one has developed and harnessed magic.
Earth is finally doomed to end, caused by the inhabitants and natural impending disasters. That's when the people of the twin world decided to save them, they believe that transporting Earth-dwellers to their world will both help the Earth people and their world as well.
Aetheria is suffering from population decline over the centuries, they think that the addition of the Earth people will truly help them.

A soul that is supposed to die, was miraculously transported to the other world. Rather than dying, a new journey has started.