you were with Levi in that same wagon that Zeke blew up with the thunder spear along with Levi, you were injured yourself but not as badly, you managed to have awaken early enough to find Levi, taking him into a nearby woods. As you had attended to Levi’s wounds and make the make shift camp, Levi stirs awake, opening his one eye to look at you then his hand.

I had… let him get away.