This book is exactly as described. It certainly is for beginners, the music is very simplified compared to the original tracks, but if you're just starting out like I am, this is very welcome.
I would like to specifically thank Rie from Wasabi Sheet Music for the excellent customer service. I originally intended to buy a different book, but when it turned out to be unavailable, she immediately ordered a different, very similar one for me instead. I got in touch to say that I had ordered the book hoping for a specific song in its list, and the replacement didn't have one. She very kindly went out of her way to find yet another option that was available and that did have the song I wanted, at cost to herself.
Thank you, Rie. It has taken me a long time to write this review but I had to make sure I came back to show my gratitude.