Have you ever seen a hairy rock before, Levi? No, Erwin thought not! He's going to study this thing later, and try to figure out why it's making a sloshing sound, like there's water inside.

Once they make their way to the treehouses, Erwin turns up the charm and manages to get some information about what they are. After talking to a handful of different people--some of whom aren't even people, and how interesting is that!--Erwin gets a treehouse assigned to the two of them. He doesn't even think to ask if Levi would rather have something closer to the ground; after living so long with titans, and being unsure about what this world might throw at them, being above the fray just feels natural.

The rope ladder up to the treehouse gives Erwin a little trouble, but he manages it without making a total fool of himself. Once they're both up in the treehouse, Erwin drags the ladder up after them.

"There." He sits back on his heels, laboriously folding the ladder into a neat pile. "Now anything from the ground will have to work to get up here."