The Abyss refers to a Star Domain, and the history of this Star Domain is very unique. During the Empire era, the Abyss Star Domain, also known as the Land of Exile, was renowned as the Cosmic Prison.
The Abyss is close to a black hole, yet hasn't been swallowed by it. To reach the Abyss, you need to escape the gravitational pull of the black hole, which can only be done by top-tier Starships.
Leaving the Abyss is the same.
Because of this, it is a natural Cosmic Prison; once exiled here, one would never be able to leave.
During the Empire era, many renowned figures were exiled to the Abyss.
Later, when the Empire collapsed and the cosmic order disintegrated, the Abyss underwent dramatic changes as well.
Many of those exiled here were exceptionally powerful individuals, and during the era of chaos, they began to form their own forces, evolving into what is now the Abyss Corps.
It can be said that the first batch of members of the current Abyss Corps were all criminals.
