...it figures. Seeing I don't think he's the kind to leave without telling me he found a new place, I think it's a safe bet to say that Korea went home.
[It was just sheer luck that Spain had came and went recently more than him actually really knowing who he was speaking to. On the other hand, he was absoutely sure who it was he was speaking to now.]
There is no obvious exit to find. One's welcome to look if they want, but if it helps, some people have been here for over a year without finding a way out.