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A Certain Magical Virtual-On

Toaru Majutsu no Index x Dennou Senki Virtual-On: Toaru Majutsu no Virtual-On
とある魔術の禁書目録×電脳戦機バーチャロン とある魔術の電脳戦機〈バーチャロン〉
Индекс волшебства x Кибер-солдаты Виртуал-Он: Волшебство Виртуал-Он

Main Story

novel
Set in a city of not only scientifically advanced superhuman students, but in a world where magic is also real. Kamijyo Touma's right hand, the Imagine Breaker, will negate all magic, psychic, or divine powers, as well as his own luck. One day he finds a young girl hanging on his balcony railing. She turns out to be a nun from the Church of England, and her mind has been implanted with the Index Librorum Prohibitorum—all the magical texts the Church has removed from circulation.

(Source: Wikipedia)

*Note: Includes 16 prologues, 18 epilogues, and 6 extras.*

Adaptation

manga
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...?