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Within the depths of the Dragon Nest, an enormous black scaled beast rested, his half-rotten body constantly absorbing phantasmal and death energies coming from the underground pits of Nether, that had appeared within the mountain at the same time as his hideout was discovered by the Dwarves.
His body, which was much more weakened before, had gained almost all of his former strength, and a bit more. This Nether was like an Elixir to Undead, and as he had become an Undead after his defeat from the hands of his own adoptive son, Sigurd, in the long past, this evil dragon needed a lot of healing, his body was in tatters…
Using this Nether provided by his Master within the depths of the Underworld, he quickly rose the Dragons from their fossilized corpses, their skeletons gained flesh and scales, and they healed and were reborn anew. Not even resembling Undead compared to him.
Check "The Protagnist's Sister Is Actually the Strongest"!