All Season Mix Best

This is a kind of "best of" compilation, as most tracks were previously released on separate "Mix" albums published by the indies store company Tora no ana.
The album comes with an illustration booklet by various artists, in which each picture represents one of the compilation's songs.

The album's title is a reference to the previous releases' titles, which were separated by season, and the symbols next to each title on the back cover art give a hint of the original Mix album the songs were published in.
Snowflake = "Winter Mix" (5 releases), Sun = "Summer Mix" (3 releases) and Flower = "Spring ☆ Fool" (1 release). The 4 songs marked as "Autumn" (Maple leaf) are seemingly new releases.