compilation of individual GuP illustrated stories and their corresponding artworks that were published by Dengeki G's magazine over a period of 2 years or so.
for those who don't speak Japanese, the stories are in the images with the pink borders.
released in December 2015.

would highly suggest removing 001.jpg and 002.jpg from your collections, and replacing them with the merged cover instead
alternatively, just remove 002.jpg from the collection entirely
doing either of the above will make the whole thing view nicely in a comic book or manga reader with Double Page setting and 0 Horizontal Margin setting.