Aaaah, I'm Out of Books to Read. It's a Sad Story, and Now...

The one major prerequisite is that the author uses their brain. Anything with an original, imaginative premise is fine. For example, Tomato's Strange Beasts: Maze City, Eternal Life True Formula, which was discontinued, Grace, which stopped updating later on, Genshin Impact's Nine Reincarnations, and that one with a new rule every month. Island, cabin, and other survival stories, as well as stories with hint messages.