This was so much fun.
The bit of plot in the last quarter of the book is tempting me to subtract one star; but I'll be generous. It's the ideal book to read if you're feeling bombarded by the oppressiveness of reality, lately.

It takes plenty of tropes, most notably from the titular Kaiju genre, and unapologetically places them front and center. It's not serious; instead, it invites you to laugh along.
Even though I'm not sure if I have personally seen a single Kaiju movie, I know enough to enjoy this just by cultural osmosis. Which is to say - I don't think you have to be a fan of the genre to appreciate this book.
(There also are various other literary references, sometimes directly discussed between the characters. Fortunately, they never feel forced.)

Wil Wheaton's narration was also great - it was very clear that when the characters were having fun, so was he.

I hope you'll join us and enjoy this book with a goofy grin on your face.