4-koma Koushiki Anthology - Toaru Kagaku no Railgun x Toaru Majutsu no Index

This 3 volume anthology is a set of four-panel manga from the Toaru Majutsu no Index light novel creators Kazuma Kamachi and Kiyotaka Haimura and the A Certain Scientific Railgun spinoff manga creator Motoi Fuyukawa. Each Story is written and drawn by various other mangaka.