Demon Slayer: He Said That a Single Tree Cannot Become a Forest

If you could live your life over again, how would you survive? Qinglin thought for a long time and gave the answer: "You let me choose!" Qinglin, an ordinary college student in the 21st century, got lucky when he went out with his friends, and was then pulled into a strange world. Then the light group talked about the world, redemption, and killing ghosts, and then ran away after throwing two buffs at him. What do you mean this is the world of Demon Slayer? What does it mean that I have the immortality buff? What does it mean that ghosts also have immortality buffs? Wait a minute, the guy over there with that mean smile looks familiar! What does it mean that my friend has also traveled through time? What do you mean my friend is a ghost? ? ! (The early pace is fast, the original characters will appear one after another in more than ten chapters, and the original timeline begins in about fifty chapters.)