Time travel! It was obviously a group travel, but due to an accident, he had to embark on the road of cool writing alone. Also, when the system finds everyone, this story will probably be over, right?
(Originally, it was a hole in my mind when I was watching Mystery, but it has been so long that it has changed beyond recognition. Even my own mother does not know what this hole originally looked like, so I just use it as the background of the OC world. In other words, if it is written in the future, the protagonist will become a pure background. Writing such a long introduction without punctuation will definitely dissuade many people!)
Intention: That's it, keep an idea in mind