Opening (Episode)

"Hey, say something! Who's the enemy?!"

- Eren demands answers from Ymir

Opening (開口) is the 9th episode of the 2nd season and the 34th episode overall of the Attack on Titan anime, produced by Wit Studio and Production I.G.

Overview
While the Scouts advance towards the Forest of Giant Trees, Eren and Ymir attempt to get answers from Reiner and Bertholdt. While receiving few answers, they discover that Reiner's personality has split under the pressure from living for two different goals.

While Ymir wonders about the warriors' goal and the reason for the Beast Titan's presence, Eren expresses his rage towards the traitors. The true enemy of humanity remains a mystery to Eren, though the Scouts are closing in on the forest with the intent of saving him from his fate.

Titan Regeneration
''Those with the power to become Titans possess an inherent ability to regenerate. Their limbs can be dismembered and their internal organs destroyed, but as long as they survive, their bodies will regenerate back to normal given sufficient time.''