Location: Somewhere around Tartarus; Demon Continent.
Time: Present (same time as the special training session).
….
In the midst of the dense land surrounded by spiky mountains, the top was covered in thick black fog, the full moon cascading over the borders of a grand castle.
The large blocks of brick walls were completely black, mirroring the atmosphere outside.
The rooms in the castle had yellow lights emitting from the glass windows. The castle was three stories tall, and the walls stretched across 2 sq. km. Each tower surrounding the castle was guarded by demons holding weapons and artifacts.
For a castle guarded and maintained by demons and monsters, it was extremely luxurious inside and out. Even the fortress of the five kingdoms seemed insignificant in front of this.
For as long as the demon continent existed, it was ruled by a single entity. There were a total of five kingdoms, each with a different elemental affinity, mirroring the human continent.
