The horrifying experiment to make Accelerator into an all-powerful Level Six has commenced—and it involves the wholesale slaughter of the little sisters cloned from Mikoto Misaka. Can Touma find a way to stop the seemingly invincible Accelerator? Could it be that weakness is stronger than strength could ever be? Meet the Author Chuya Kogino is the artist for the manga adaptation of the smash hit light novel series, A Certain Magical Index. Kazuma Kamachi is a Japanese light novel author and creator of the massively popular series, A Certain Magical Index, its sequel, A Certain Magical Index: New Testament, and a manga adaptation, as well as two spin-off manga series, A Certain Scientific Railgun and A Certain Scientific Accelerator.