Demon Slayer: Reborn as Kokushibo

Kokushibo, the Upper Rank One demon, is granted an unthinkable second chance, not as a demon, but as a human in a world on the brink. Waking to find himself married to the gentle Kanae Kocho, his ruthlessness clashes with a newfound domesticity he never desired. Yet, the echoes of his demonic past and a mysterious 'System' force him to confront the rising tide of corruption threatening both humans and demons alike. With the fate of this fragile peace resting on his katana, Kokushibo must navigate the treacherous path between his former monstrous self and the human he's reluctantly become, all while protecting the family he never thought he'd have. Can a demon's heart truly change, or will his inherent brutality consume him and everything he holds dear?