"I did it for me." As Eren tells Armin in the very last episode of "Attack on Titan," he was always just "a garden-variety idiot who got his hands on power." The answer to the above question is ...

Spoilers ahead for The Last Attack. The post-credits scene reimagines teenage Eren, Mikasa, Armin, and other characters ... it may not feel essential to watch in theaters after all this time.