Salty Dog VIII

Even if in little size, this is the cover of Salty Dog 8.
As we can see, it is the same (divided between front and back cover) of two extras of the artbook.
We can guess that maybe the usual 4 "new" illustrations could be the 4 main characters of Saiyuki Gaiden showed in Animate extra.

Salty Dog 8

Here a bigger pic