- Publisher : Kodansha
- Genre : Horror/Science Fiction
- Rating : Teens 16+
- Creator : Hajime Isayama and Ryo Suzukaze
- Illustrated by Satoshi Shiki
- Format : Black & White
- Size : 5" X 7.5"
- Pages : 192
Saved from exile, Kuklo and Cardina meet the hero Jorge Pikale, the first man ever to defeat a Titan in combat, and they learn how he did it: a mysterious gas-powered grappling machine known only as "the device." Jorge believes Kuklo might just have the agility and reflexes to master this startling weapon and take the Survey Corps to a new level. But Kuklo has his doubts, and what will Sharle think...?
Prequel series to Attack on Titan.