The Demons and Demon Slayer have been fighting since a millennia ago, ever since the Birth of the first demon in Japan, Kibutsuji Muzan.
But what if there's something more than that? Someone else who's holding the thread that is fate. Someone who controls the entire war.
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The story takes place in Taishō-era Japan. It follows Sukinahito Shizen, Tanjiro Kamado and his sister, Nezuko Kamado as they seek a cure for Nezuko's demon curse. Tanjiro, Shizen and Nezuko become entangled in the affairs of a secret society, known as the Demon Slayer Corps, that has been waging a secret war against demons for centuries. The demons are former humans who sold their humanity in exchange for power.
Tanjiro Kamado is a kind-hearted and intelligent boy who lives with his family in the mountains. He became his family's breadwinner after his father's death, making trips to the nearby village to sell charcoal. Everything changed when he came home one day to discover that his family was attacked and slaughtered by a demon.
Tanjiro and his sister Nezuko were the sole survivors of the incident, with Nezuko being transformed into a demon, but still surprisingly showing signs of human emotion and thought. After an encounter with Giyū Tomioka, a demon slayer, and Sukinahito Shizen, a person that was to protect him, Tanjiro is recruited by him and sent to be taught by Sakonji Urokodaki, a retired Demon Slayer, to become a demon slayer, and begins his quest to help his sister turn into human again and avenge the death of his family.
On one mission, Tanjiro founded out that Shizen is not who he tells himself to be. Tanjiro have noticed that Shizen was a bit off, but never thought too much about it. A bit frustrated, Tanjiro demanded Shizen for answers.
What if Tanjiro have a fate that he will be the master of Chaldea and Humanity's Savior?
Tanjiro Kamado is the son of legendary Yoriichi The Demon Slayer who hunting down the demons and Muzan the demon king that he was beating the crap out of Muzan like nothing but the demon king stood no chance against him. Then Tanjiro living with his mother, two brothers, two sisters, and one little boy that he had a beautiful normal family life like happiness and until there was one old man who named himself is Zelretch....the immortal vampire gave Tanjiro a present like a gift for him...this is going to taken surprise for what Tanjiro gonna witness the true power from the deck of cards.
Tanjiro's family been murdered by a demon and he with his young brother Takeo tries to take sister to safety until one hashira member tries to kill the girl...but something else that awaken and make Tanjiro gonna see the appear of hero.