So far, this series is officially hosted on three different websites:

1. Nicoseiga's manga portal (not the artist illustration portal). This is the most complete collection, covering 20 chapters and ~96 pages. It's hosted on some sort of manga-viewing web app though (with [optional] annoying viewer commentaries included), so it breaks the Danbooru upload bookmarklet. I could use direct image links, but the only ones I seem to be able to access via the web app point to <lohas.nicoseiga.jp/thumb>, indicating that they are thumbnail samples (they also have low resolution).

Do we need a premium Niconico account to view the original images? And what's our policy on uploading images from Nicoseiga's manga portal anyway?

2. Shounen Jump Rookie portal. Incomplete, only going up to 4 chapters. Seemingly better resolution than the Nicoseiga's version (links also don't appear to be resampled thumbnails). Of course, all this is moot since the pages hosted there are technically a Shounen Jump (web) publication, making it verboten (to source upload links there) for Danbooru, even if it's functionally a self-upload portal like Pixiv and Niconico.

3. Pixiv. This one is used for doujin-related (print media so far) releases. Highest quality and resolution, but only covers Chapters 1-2 (+ bonus pages) for the COMITIA126 book, and a smattering of other chapters (again with copious amounts of bonus pages not seen in the web series on NicoNico) for the Comiket 95 book.

All the pages uploaded so far are from the Pixiv releases.