A look into Grisha's memories shows Eren the many secrets his father was hiding, including one which led to his mother's demise.
That Titan...
...ذلك العملاق
Jener Titan …
Así que tú eras aquel titán…
Así que tú eras aquel titán…
Ce titan…
Quel Gigante, eri tu...
Aquele Titã... Era você, né?
Значит…