Attack on Titan II: End of the World (2015)

After transforming into a Titan, Eren Jaeger is treated as a threat by the human authorities. Instead of being celebrated as a possible weapon against the Titans, he is captured, tortured, and accused of being dangerous. The government demands an explanation for his ability to transform. Eren is saved by Shikishima, an intelligent Titan-like figure who appears to understand the origins of the creatures. Shikishima explains that Titans were created through scientific experimentation and that Eren’s ability came from an injection administered by his father when he was a child.