[Shadow00000]

[Tokiya Seigo(刻夜セイゴ)×Okuse Saki(奥瀬サキ)] Teizokurei Monophobia (低俗霊MONOPHOBIA) - Vol.06 [2012-02-04][TG]

Omake from the last volume, only 4 pages long, the only volume without good quality scans. Happens as a dream sequence, character is Toono I believe.

If someone can submit the proper info of who is the mysterious guest author it would be appreciated, I can't find any info anywhere.

It's not Rouga, though it does look like it did hentai (written all over it), also the artwork is well defined, and looks super familiar. Maybe another author who worked with one of the two authors.

Title only says: おまけマんガ えぶん刻夜セイゴ, so it's useless.