Tanjiro was once a kind slayer, whom wish is to annihilate Muzan Kibutsuji, the leader of all demons on Earth. After a tragic incident, he turned into a demon, leaving Nezuko Kamado behind. This is not a love story. Just a story of Tanjiro being an upper moon zero. What will happen? Will Nezuko meet her brother again? Will Tanjiro turn back into a human? Read this story to find out about the ending!