levi and erwin are the only people to come back from a mission and a woman throws a rock at erwin. levi tends to his wounds and knows in his heart that erwin in not a monster but a human like anyone else. erwin thinks about how he'll die and levi promises he will kill him and that he will die a human.
The feels....it fits perfectly with the original story...about the original cause of levi joining survey corp....and the fact that it's levi who let erwin die in the end. he kept his promise....BRB CRYING I STILL CAN'T ACCEPT HIS DEATH