The universe was vast and endless. Humans on Earth had always been researching the universe in the past, but they had yet to have a clear understanding of the solar system, let alone the universe.

With scientific and technological means, even if thousands of years went by, Earth’s humans still could not understand the universe clearly.

In the vast universe, there were seven Greater Realms.

One of the seven Greater Realms was destroyed by humans during the Primeval Age. Now, only six realms were left.

These six realms were named Greater Realms because all of these six realms were divided into three planes of existence. The three planes of existence were respectively Mortal, Sage, and Divine. Other planets did not have different planes of existence.

However, although many planets were not divided into different planes of existence, they were still very powerful.

In the vast universe, there were innumerable habitable planets for living beings.

The providence of Earth’s Third Cala