Heze, a visionary cognitive engineer from futuristic Aethelburg, becomes consumed by the Null Memor—an anomalous void that obliterates data and existence itself. Driven by reckless ambition, he merges his consciousness with the abyss, awakening in Nihil Aethernis Nocturne's cursed body—the doomed heir of Eulogia's most tyrannical noble house, where magic and savagery intertwine. The Shackles of Nihility bind Nihil into an existential black hole, severing all emotional and magical connections while reality slowly erases him. When Heze's soul claims this dying vessel, something extraordinary transpires: the Void itself responds to his presence. Two consciousnesses, one body, infinite darkness. Trapped within Eulogia's brutal landscape, where transmigration becomes psychological warfare and the curse threatens annihilation, Heze discovers the Void may transcend its cursed nature—it could be salvation incarnate, or the harbinger of ultimate oblivion.