Levi feels like he 's invading on some private, brotherly ritual. Erwin had told him some time ago about his plan to bury his father 's books in the hills near Maria, on Mike 's people 's land. Levi had thought it was a fine plan, as far as plan 's go. He knows Mike 's nothing but loyal, and there 's no risk of them losing them up there, and a low risk of any wary MPs ever stepping foot in that direction. MPs are hard-pushed to leave Sina on a good day; the furthest reaches of the walls, where the titans scratch at the stone, is well outside the limits of their effort. Erwin had reiterated the plan, some nights ago, over dinner. Just the six ' Erwin and Levi, Hange and Moblit, Mike and Nana ' huddled around a bench in the mess hall. 'And Levi, ' Mike had said, 'you 're coming too, right? '