A Necromancer Betrayed by His Comrades and Executed Revives 10,000 Heroes Who Had Become Undead, Builds the Most powerful Kingdom, and Begins His Quest for Revenge. Heroic Spirits Gather at the Throne of Darkness

Crow, a necromancer, gets betrayed by his comrades and cast into the Abyss. But, consuming the miasma, he rises again, fully resurrects 10,000 heroic spirits who had once been destroyed, and founds the mightiest of kingdoms. With a legion of ancient warriors at his command, Crow exacts a gruesome and relentless revenge against the former comrades who betrayed him and the god who was behind it all...! (Source: Kodansha, translated)