Sega's popular series "Den'nō Senki Virtual-On" and Dengeki Bunko's "Toaru Majutsu no Index" unite in a shocking tag! The first volume of the comicalization with the same title as the game that was on sale in February!

"Den'nō Senki Virtual-On", the next-generation fighting game which became rapidly popular in Academy City where you operate a gigantic Virtuaroid that appears in the actual cityscape. At the urging of the rave reviews of the game by Index, Kamijou Touma also begins to battle, however...?