1985am
Giyuu Tomioka was never meant to survive.
Branded insane after witnessing his sister's death, orphaned, rejected, and broken, he clung to the sword as his only salvation.
But fate had other plans.
After a suspiciously simple mission leads him into a forest he doesn't remember entering, Giyuu is ambushed by Kokushibo -Upper Moon One- and offered the one thing he's never had: freedom from his guilt.
Now reborn as a demon who retains every painful memory of his human life, Giyuu must wrestle with what remains of his humanity. With a new blood-based breathing technique that rivals even the Upper Moons, he walks a path of silence, grief, and blood.
Will he become the monster they always feared he was, or the nightmare the Demon Slayer Corps never saw coming?