West of Erin Continent, the Wailing Abyss.
This is a place shrouded in darkness and cold all year round.
Sunlight cannot penetrate the dense black fog to reach here, and the bone-chilling frost is ready to swallow any intruder.
Only the darkest and dirtiest demons and the undead clan, who are already dead, can survive here.
At this moment, in a certain part of the Abyss, about eight hundred meters below the dark clouds.
In an architectural complex emitting a ghostly green light, hundreds of figures are gathered here.
This is the territory of the undead clan, a place where the deceased from the former Full Moon Duchy migrated to hundreds of years ago.
They used a unique material from beneath the Abyss known as "Ghost Ore" to build their own palace here.
Because of the long "lives" of the undead, time seems to have lost its meaning here.
The idle undead, apart from fighting with Abyss demons, are left with only art—a pastime that requires few resources.
