From The Heretic Knowledge Vault
A bit of filler art (or, if you prefer, omake) in which characters from the comic break the fourth wall and tell us all what's going on -- sort of. So far it's taken the form of a short series involving Bani Igaaru and Sara Amraphel at the end of chapters starting with Chapter 38. Fran, Naga and Misa have all put in brief appearances as well, with Misa becoming a bit more of a regular feature as things progress.
See this page for the canonical list of Errant Commentary installments, with direct links to the pages.