DRAGON Arc

The DRAGON Arc is a major story arc of the Toaru Majutsu no Index series. The arc occurs in parallel to the events in the English Civil War Arc, focusing on the happenings in Academy City's dark side. It continues on from the aftermath of the Battle Royale Arc, as Accelerator and GROUP try to track down the mysterious DRAGON, while Hamazura Shiage finds himself dodging assassins, ultimately finding himself in another confrontation with Mugino Shizuri.

The end of this arc, as well as the previous one, would immediately seque into the final arc of the Toaru Majutsu no Index light novels. In this arc, Last Order falls ill after the manifestation of Aiwass, the latter later pointing Accelerator towards Russia if he wishes to cure Last Order, while Hamazura rescues Takitsubo Rikou and hijacks a plane that is programmed to go to Russia already.