Demon Slayer Reincarnated as Muzan's Sister

[Protagonist Uyashiki Yakage + Quick Travel + System] Living in modern times, Yokage entered a rich family as a real daughter. Unexpectedly, he died in a fight between the wealthy families. After turning into a soul, he was selected by the system to travel into the world of the manga "Demon Slayer: Kimetsu no Yaiba" that he had read before. He became Muzai's sister, Utsuyashiki Yokage. Yikage had read the plot and did not want to participate in the plot, so he felt that he could rely on his system. The skills given by the commander-in-chief were left to eat and die, but the younger brother should become a ghost, and the head of the family should be cursed and cursed. Yeying escaped directly and entered a better life. From then on, there was no noble daughter, Yashiki Yeying, only the first street kid in Neon Country, Yeying. On the road of killing ghosts, she met many people, and gradually she felt that she was not alone. —— Ye Ying: Laughing to death! As soon as I walk into the street, a cutie will come to chop me. Do you think I will be afraid? No! I will continue to walk around the streets and pick up children here and there. Zhu Shi: Although Miss Yeying looks the same as the Ghost King, she is extremely gentle in her heart. Wumei: My sister appears and disappears like a shadow. Everyone: You can see her everywhere, just like a ghost. Stepking brothers: good brothers, of the same mind. Note: The protagonist and Wu Mei are close friends! ! ! Other than this, you can do whatever you want! !