Demon Slayer, I Am an Ordinary Person

When an ordinary person accidentally travels to Demon Slayer. How should he survive as ordinary as in real life? Or carve out a new path of your own in this world? The protagonist is an ordinary person. Don't think of the protagonist as too awesome. Comments in the comment area can be considered. Setting: Something that cannot be realized in the real world will not work for the protagonist. Your comments are my motivation, but as long as I feel that there are still people reading this, I will continue to write. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.