Strange Things on the Island: the Bronze Door and the Mysterious Key

Is There Such a Thing? Congratulations on Trying Your Best to Defeat My Weakest Form

Are There Any Old Books in Which the Protagonist Is a God Who Cannot Be Seen, Cannot Be Spoken, and Cannot Die?

The main character's ability is speech. If you don't find this kind of book, I'll recommend something else! There's been a book shortage lately! ! !