Demons drawn to evil energy attack humanity, and only Zamashi, warriors blessed with spiritual power and given divine blades by the gods, can resist them. Under the protection of these warriors and their supreme leaders, the Blade Emperors, peace is maintained.

​In a world where spiritual energy is everything, Kamikiri Haruto is despised as a cursed outcast completely devoid of power. Despite his status, he loses his life trying to save others beyond his capability. This death leads him to strike a fateful deal with a god of calamity, opening a brand new path for him as a Zamashi.