Not sure why lansane uploaded two versions of this into the same Pixiv gallery, but he did.
Ah, there's no text under the hole as iaisy pointed out in the other post.
some artists llike to upload a "cover" when they post imagesets, and then upload the pic in the order they wanted, like in a chronological order
It's not like tumblr and twitter where you have a strict limit of pics, so they can reupload several images with little changes rather than compile them in a single file
What is Fubuki doing here? Going rogue or she just has a new pet she wants to take back to base? I also see she's covered her smokestack, hope she doesn't overheat...