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 British Royal Family 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 segue 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 pointing Accelerator towards Russia if he wishes to cure her, while Hamazura escapes Academy City with Takitsubo Rikou by hijacking a supersonic passenger plane, eventually diving out above Russia, near the Elizalina Alliance of Independent Nations.