((free)): In Which Ep Eren Become Titan

Eren Yeager first transforms into a Titan in , titled "I Can Hear His Heartbeat: The Struggle for Trost, Part 4". While his Titan form—later identified as the Attack Titan —actually appears earlier in Episode 7 to save Mikasa, Episode 8 is where the series explicitly shows the transformation process from Eren's perspective. The Context of the Transformation

The discovery that Eren is the Titan inside the nape changes the genre of Attack on Titan overnight. The show pivots from "hopeless survival horror" to "political thriller with monsters." in which ep eren become titan