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? | A Certain Magical Index Vol. 4 (manga) by Kazuma Kamachi, Paperback | Indigo Chapters