Taro Tsubasa wakes up in the rain with no memories—only a name and a black sword. Alone in a harsh world, he soon discovers that demons walk among men, born from hatred, greed, and pain. Without knowing why, Taro can fight them. And he does—relentlessly.
As the bodies pile up, so does the fear. Villages call him a savior. Others, a monster. The shadows that cling to him grow stronger, darker… harder to ignore.
Then he meets Sayaka—a sharp-tongued, mysterious spirit who knows more than she lets on. Together, they form a strange partnership: she guides him to the demons, and he cuts them down. But as Taro learns to control the power within him, questions begin to surface.