Attack on Titan: Before the Fall manga volume 15 was created by Hajime Isayama and features story and art by Ryo Susukaze in this prequel series to Attack on Titan.

As the days dwindle before the Survey Corps’ last chance at an expedition, the need to train with their new equipment for fighting the Titans is more pressing than ever. But when an accident during training is revealed to be a work of sabotage, it sends shockwaves through the camp. Who is trying to ruin humanity’s best chance at stopping the Titans, and why?!