The Man In Black. Book 2 of Revelations (en Inglés) - SE Jacobson

In a realm woven with magic and conflict, a demon named Melkor quests for redemption alongside an eclectic band of rebels. Pursued by the darkness of Abaddon and celestial conflicts, they fight to preserve reality's balance. As ancient deities and elven warriors emerge from the shadows, Melkor's existence becomes the tipping point of a cosmic scale. Intertwined fates lead to alliances and struggles across planes, where valor triumphs and vengeance fuels epic confrontations. At the heart of this saga lies the search for salvation-not just for one, but for the many souls caught in the eternal dance of power and consequence.