Ordered this for a friend who loves Attack on Titan and also the music from the show. A bit of a challenge for someone who is solidly in the intermediate stage of piano, so I definitely do not recommend this to someone starting out in beginner's piano. Quality of the book is amazing, and the seller was very thoughtful in including a nice greeting card and also printed a title page with the English titles of the song to make the book easier to navigate.

It's also definitely not a random person converting the song by ear and doing their best to put it on sheet music--this has the quality of a professionally arranged music and properly published, which I appreciated immensely. One of the reasons I wanted to order it from Japan is that it had a higher chance of that being the case since the show was from Japan. I cannot comment on how true to the original the songs feel though, as I have not watched the show but a quick test of the sheet music sounds good.

Delivery was fast, it was trackable, and went very smoothly--includes signed delivery. Music book arrived in excellent condition. Very happy with my purchase.