Demon Slayer's Bizarre Adventure

(Demon Slayer: Kimetsu no Yaiba + the protagonist is a ghost + time travel + generally no system) Let me tell you in advance that the author can skip reading this book, please be careful to click on other pages to update. I really can't stand it anymore. The data has been so bad recently, I'm begging for help. The protagonist is a certain author who was obsessed with writing. Because of his poor writing skills, this person who was studying the keyboard and slapping the keyboard went completely crazy and collapsed to death. When I traveled to the world of Demon Slayer: Kimetsu no Yaiba, I was happy because I was very powerful, but painful because I couldn't eat delicious food, and because of the character I traveled through, I could only speak in the other person's way. There are not many knives, they will save some characters, and their personalities will be a bit more out of the ordinary. Please give me a hand, and if you want to find someone else, you can skip to more than 20 pictures. By the way, I would like to explain that Butterfly Ninja is not Tongmo CP, it is not CP, it is not CP, important things should be said three times. As for why the protagonist has the name Butterfly Ninja, it's because this character has more scenes in the later stages.