Akatsuki Hikaru, born with incredible eye sight and the ability to see emotional auras, only had to worry about if he would make enough money each week to feed himself after his parents died. Fortunately he had the kind and caring Kamado family as neighbours. The neighbours always looked out for one enough so one night after hearing screams Hikaru came running to his neighbours and friends home. When he arrived there was a strange man standing over the dead bodies of people he saw as family. Who was this man? What did he want? More importantly why did he try to kill Hikaru? Pulled into the world of man eating demons will Hikaru be able to survive and help Tanjiro restore Nezuko back to being a human? Or will they die trying? The bigger mystery was, why were the demons obsessed with trying to devouring him only to be driven mad? And why is it that Kibitsuji Muzan wants him die so badly? Join Hikaru, Tanjiro and Nezuko along with more friends they meet along the way as they attempt to find a cure to turn a demon into a human, no matter the cost.