やましい出来事 (Yamashii Dekigoto) or "A Guilty Happening" was published on March 5th, 2012 in Big Comic Original. As such, it was published around the time of these chapters.

This translation is a fanscan. Of course, as unofficial fanscans and translations, they have their own issues but at the least we don't have to worry about flipped art. This story has four pages of color and four pages of red tint. It seems the fanscans found the original printing of the story, which is great.

Seems this is a different scanlator? Not sure though. Also, they seem to have translated the editor's marketing on the front. I am pretty sure that is who writes these. They normally aren't in volumes. Anyway, I don't have too much to say about this one. It has some interesting stuff in it, but I am a bit ambivalent on it.