It's not like he's not on the same team anymore. I guess is more complexed than that. Above all, Eren really cherish life and his friends and even more the freedom. Maybe right now it's hard to see this, but to fool your enemy you must fool your friends first and my guess is what Eren is doing this right now. Agreeing with euthanasia thing is kinda totally out of his character, you know? Everything he went through, he's the type of person who believed that everyone can achieve freedom and has right to live. Eren is probably thinking in a way of betraying Zeke because is very clear that Zeke has so much trust in Eren because he thinks that Eren had the same childhood as him. Someone will probably say that I'm talking bullshit, but I truly believe that Eren it's not on Zeke's side.
Ah I could see this kind of twist happening ┗( T﹏T )┛
Hi, sorry I've had a bit of trouble following the plot; who's planning what with whom and why? Could a gentle soul explain to me what Eren is planning? I get that he's not on the same team as before but I lost sight of.. dunno, my brain fried sorry ^^"