I bet it started out as a regular book, but something happened to turn it into a grimoire. In that case, anything written there would no longer be just a fairy tale, but a magic formula.

There's a possibility that even a made-up curse could become reality.

...This book used to belong to

a little girl with great magical power.

Some of it must've rubbed off on the book while she was rereading it countless times. ...She really loved that book, apparently.

Even if it's a janky story

that could really use some work.

Have ya read that book too?

Once or twice.