When Supernatural Phenomena Come Knocking on the Door

"Hello, by the time you have the chance to see this letter, you will not have much time left." "When you find that you go to another world as soon as you sleep, and then you sleep there successfully but you may not be able to come back, it doesn't matter, because you and I are all on the same journey, this is the so-called insomnia." "If you successfully return to your homeland, please pay attention to your surroundings. Maybe even your homeland no longer welcomes you, or even harbors ill intentions." "Also, don't be happy or afraid of the appearance of supernatural phenomena, because they are here for team building, you didn't expect it, right?" "As for me? Just call me Kyle. In a world where supernatural phenomena exist, it's not a good thing to reveal your real name." "However, if you want to have a real sleep, a short or long-term resting place, or for fame, wealth or ideals, then... Babel Bookstore welcomes you."