Testing-The-Water

I'm looking for a good Undertale book, any recommendations?

I'm reading a bad undertale fanfiction. The book is almost unreadable,  yet, there are still people like, "OMG, this is the best book! Da feels! I'l literaly crying right now! Good book thou!"

Hi everyone! So i am thinking of making an underfell book... what do you guys think? I have an idea of what will happen, but I wonder if anyone will read it... Would you guys like to read it?