BBBLP
Robot Rock
Spoiler:
You are lightweight right. I don't know exactly what happens. But apparently the exact wording from a member was like
"I really thought this anime had balls at the end of episode 5. I was too excited I read the enxt chapter in the manga and was disappointed. I knew it was too good to be true"
So pretty much, Eren is still somehow alive and kicking. Or maybe it was a dream or a hallucination.
Spoiler:
I saw a panel from the magna. It showed what looked like an armored titan punching a regular titan in the face. So maybe Eren becomes a titan or finds a way to use them. Or maybe it was fan art.