Ancestral spirits drenched the world in blood 1000 years ago, forcing people to choose between death and turning to ancestral spirits. Saido Kado, on the other hand, was the only swordsman in the world who could match up with the ancestral spirits and seal them away. However, after 1000 years, people became dissatisfied with the current world and desired the return of the ancestral spirits.
Tahara Kado, a young swordsman and the last Kado of his generation, aspires to be the best swordsman in the world, but his peers mock him because he is an F-Rank. His wish was granted, and he was killed, but an awakening system reawakened him, allowing him to level up and unlock new abilities, power, and sword skills.