A look into Grisha's memories shows Eren the many secrets his father was hiding, including one which led to his mother's demise.
Our founder Ymir awakened
the Power of the Titans...
...أيقظت مؤسّستنا يمير قوّة العمالقة
Mithilfe ihrer Titanenkräfte
kultivierte unsere Urahnin Ymir
Ymir obtuvo el poder de los titanes
Grâce au pouvoir des titans,
notre ancêtre, Ymir,
La nostra antenata Ymir
ottenne sì il potere dei Giganti,
A nossa ancestral, Ymir,
despertou o poder dos Titãs,
Когда прародительница
открыла силу титанов,