Hello, I'm the one who uploaded the pixiv fanbox archive a while ago back in September. I stated in a comment there that the artist's Twitter / X is protected, meaning only limited users can view it. It recently occurred to me that I am one of those users, and as such I've taken to archiving every relevant image I could gather from it. All images are in order of oldest -> most recent.
NOTE: GIFs are (to my knowledge) unable to be saved from protected accounts. I've taken screen recordings of all of them but, do not have them available to upload currently. Unfortunately due to the GIF format and the recording the quality is also quite poor. If anyone knows a workaround, feel free to let me know.
NOTE 2: Most of these images had writing or other context attached to their post, which has not been archived. Other text-only posts have also not been archived.
NOTE 3: The image series shown on page 21 is, to my knowledge, still fully lost. It was uploaded to the artist's pixiv but no archive I've seen so far has contained it. If you are aware of an existing archive of it, or a way to recover it, please leave a comment.