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...?

In Academy City, there is a popular next-generation contest.
 
In reality, this is a hand-to-hand battle between gigantic Virtuaroids that appear on the streets. It's formally called as "Computerized War Machine Virtual-On". Since it can be argued that Level 5s and Level 0s are equal given the technique, it has spread with explosive force among the students of Academy City.
 
One day, Index with her white Bal Bados, fights Touma's stock Temjin.
 
"I'm Ririn. Furashina Ririn. I'm not Ririna... Munya..."
 
A seemingly insomniac girl arrives at Academy City.
 
And, Kamijou has an encounter. The usual Virtual-On meets an unavoidable unprecedented accident. That is, the Computerized War Machines fuse with Academy City, a sign of a grand battle about to happen! Misaka Mikoto and her Raiden, Shokuhou Misaki and her Angelan, as well as many others will make appearances!
 
(Source: Toaru Wiki)
 
Note: Includes a prologue and epilogue.

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