Animax Musix and Honto have teamed up to produce a 90 page ebook celebrating Granrodeo’s 10th anniversary and their five Animax performances.
On sale here for 3000 yen, 「GR10×AX05」 is 90 pages long and includes imbedded videos from each of Granrodeo’s Animax Musix performances.
You’ll need the Honto reader to download「GR10×AX05」, but they have a free PC version that should work for anyone. They also have iOS and Android versions that might be region-locked.
There’s also a short video at the bottom of the sale page, with Kiiyan and e-zuka.