The light left her eyes after witnessing the brutal murder of her family. She was later taken in by a kind man, who is the head of the Kamado family. L/N Y/N is her name. A young beautiful girl with a tragic past. After getting taken in, the Kamado family would always tries their best to make the h/c haired girl feel welcomed in their family. They always make sure that she's included in every activities. They treats her like a real family, like she was one of them. Slowly, Y/N learns to trust again. After an unfortunate event, Y/N is set out on a journey with the two oldest siblings of the Kamado family, that goes by the names of Kamado Tanjiro and Kamado Nezuko. But after one incident, they got separated and Y/N is taken to a place where she met a boy with a similar fate as hers. The boy's name is Tokito Muichiro. After meeting her, Muichiro feels something he never thought he could. But he's not the only one who feels that way for the h/c haired girl. The oldest of the Kamado siblings have always felt that way for her. What will happen in her life? With two boys fighting for her heart. Who will she choose? Curious of her journey? Read and find out in... Light Up My World Disclaimer: I do not own KnY or Demon Slayer. Any parts that aren't in the anime is purely from my imagination. DO NOT COPY OR TRANSLATE WITHOUT PROVEN PERMISSION!