After dying together with a gang of villains in the northern lands, Porthos, a mixed-race youth, doesn't meet death. Instead, he falls into another world overrun by evil spirits.
Unable to speak the language and unfamiliar with the customs, he is shunned as a "monster." Then he picks up a scarlet strange stone from Arad: Terra Stone. His twisted arm becomes his only means of survival, and grants him the power of destruction from the god of ghosts and spirits, Kazan.
"When you are cut off from all things in this world, Kazan will take control of your heart."
At the cost of half his life and half his emotions, he becomes a Berserker. Burning with blood and wielding his life as a blade, he is a demon hunter who thirsts for blood more than the evil spirits themselves.
The Demon Slayer Corps closes its doors to him, for his life is already like a candle flickering in the wind. Trained by the Stone Hashira, he stands at the brink of life and death and ultimately turns the curse of his demonic arm into his own will, creating a path unique to the Asura: Blood Breathing!
As a Berserker, he will protect others. In this tragic epic of humans and demons intertwined, he will write a bloodstained legend of his own as the "Blood Hashira."
