Demon Slayer: The Master Is Actually Upper Rank Zero

**To end the curse that had haunted his family for a thousand years, he chose the darkest path.**

As the 97th head of the Demon Slayer Corps, Kagaya Ubuyashiki had always been a gentle, revered leader in the hearts of its members. But as the curse steadily ate away at his life and he foresaw his daughters falling victim to the same fate, he made a choice that would shake the world from the brink of despair: he struck a deal with Muzan Kibutsuji and became the most secretive Upper Rank Zero.

By day, he remained the leader guiding everyone in their fight against demons. By night, he served the enemy he had opposed for a thousand years. When the truth came crashing to light on the eve of the final battle, the Demon Slayer Corps' faith collapsed overnight. The “father” of old became its most hated traitor, and the Hashira who had once sworn to serve him turned their blades against him.

But at the end of this path steeped in sin, does Kagaya still have a hidden card that could turn the tide of a thousand years? As Wisteria blooms alongside bloodshed, the game of intrigue that began with betrayal will finally reach an ending that shocks everyone.