Speaking of Null Brainz, I just discovered that they've been submitting various artworks and sketches that aren't anywhere else to their Pawoo, such as the attached image.

source: https://pawoo.net/@dorokame/100118414404993644


Null Brainz also has both a twitter as well as a profile on a site that kind of looks like a hybrid between a blog and DLsite:

https://twitter.com/null_brainz
https://ci-en.jp/creator/1615