I was curious about the same thing but I guess that the book was only one in the world and the childhood best friend had the copy because he was rick or something??
Rich**
Each book is probably their own world i guess
ur right but remember when jaewoo came out of the book and he said that when he reread it the scenes had changed to how he had influenced them in the book? so now that version is the only version of that story in the world
u can throw the book into the ocean, sure, but are we going to ignore the fact that there is multiple copies of published books