——[Abyss Steel]!
As the name implies, this is a special mineral metal that only appears at mysterious ocean depths akin to the Abyss.
No one knows the exact reason for the birth of this metal, but because shipwreck remnants and cooled dead seafloor volcanoes are often found near its excavation sites, experts in the field of ocean minerals speculate that its origin may relate to the Negative Energy of lingering souls and solidified high-temperature lava.
Due to its unique environmental conditions appearing only in the deep sea, with no obvious features in the surrounding terrain, the quantity of this metal circulating on the market is quite scarce; basically, it can only be slightly supplemented through trade with ocean races or through plunder.
Usually, Abyss Steel presents a color dark blue akin to the deep sea.
