Erwin Smith, the 13th Commander of the Survey Corps... He's always been your most trusted ally, and you usually don't trust anyone. He always made you feel welcome, sure he arrested you, but for God's sake, he turned you into the Captain.

You're Humanity's hope. And yet here you sit on your knees, the titan serum in the syringe, in which is clutched tightly in your fist. Here you sit on a roof, everything's gone to utter chaos here. Titans everywhere, the Beast Titan, the Reiss titan, the Colossal titan. All of it. Erwin's dying self lays injured in your arms. Right arm gone, stomach gouged out. And over there, Armin's barely alive burned body. Eren begs you. Mikasa begs you. "Captain Levi! Please, bring Armin back!" They cry. Two brats you can't stand, and yet you want to bring Erwin back.

The Commander would usually say "No" in these situations, right? But you really want to bring him back. Armin. Or Erwin.