Levi wasn't really sure if the water around here was ocean or not -- he hadn't wanted to tasted it and he asked enough stupid questions, but there was a good deal with it and even a little boat. He hadn't tried that yet either. But he liked the idea of exploring everything with Erwin so he flashed a small smile in response.
So of course Erwin had to make it a bit tragic immediately. "The hell are you talking about?" He asked, as if he didn't know. Because people came and went here and it was just as likely Erwin or Levi himself would disappear as anyone else.
"...Is that what you'd prefer?" It made sense for people to think about people leaving as going back home but he wasn't sure how much it was fact versus want. Levi didn't love the idea of having Erwin one day and then having to picture him dead again the next -- it wasn't particularly romantic. But it was pragmatic and maybe they just had to be both.