Eren recalls an earlier experiment with Hange Zoë where he failed to transform despite repeatedly biting his hand until it bled. Later, while taking a break, Eren accidentally triggered a partial transformation of his arm just by reaching for a fallen . This incident revealed two critical things:
Watch these breakdowns to better understand the critical choice Eren makes and the mechanics of his transformation discovered in this episode: Attack on Titan Episode 19 | Explained in English YouTube · Anime doc Watch Shingeki no Kyojin (Dub) Episode 19 for f...
Attack On Titan (Shingeki No Kyojin) Episode 19 Review - Bite YouTube · JimsNerdNation Eren recalls an earlier experiment with Hange Zoë
Though the squad initially reacted with hostility and drew their blades on him, they eventually bit their own hands as a gesture of apology and solidarity, promising to trust him if he trusted them. The Ambush The Ambush