This one took me by surprise. Having tried a number of AI writers and having been underwhelmed by the output, MB diid take me by surprise. The output from a language persoective is excellent, and make ne sound quite clever, as it uses words I could never have conceived. I tried a fiction book, just for fun, and I was delighted. As with all thinks AI, the provided output will need a polish, but as a starter of a book or project it is a great tool.
I would recommend this product. As as a finisher, enjoy the first paragraph of "Spottys Adventure", courtesy of Magic Bookifier :-)

Chapter 1: The Great Escape

In the quiet corner of the backyard, nestled among the lush greenery, lay Spotty's wooden rabbit hutch. It was his home, his sanctuary, and yet, it felt like a prison. Night after night, Spotty found himself yearning for something more, something beyond the confines of his small wooden world. And so, he devised a plan, a daring escape that would lead him to the adventure he so desperately craved.

As the sun began its descent, casting a warm golden glow over the landscape, Spotty watched intently as his owner approached, a familiar routine unfolding before his eyes. The owner, unaware of Spotty's cunning plan, went about the task of feeding him. With each morsel dropped into his bowl, Spotty's excitement grew. It was during this nightly ritual that Spotty had discovered his means of escape. (to be continued..)