So they changed their logo with the movement to Vladivostok.

Old Logo

New Logo

So whats the meaning of the eye and what landmass/continent is "below" the eye?

I suppose that Yamatetsu/Buttercup are looking for ancient artifacts too.

1. Asia is one of the presumed places where Atlantis could be sunk. And Yamatetsu is a big player in underwater habitats (a hint?).

2. The corp has a diggingsite in the Arabian Desert at Mahram Bilquis (Temple of the Moongod), the tomb of the Queen of Sheeba. So is Buttercup the spirit of queen or was she the queen?