There are 12 companion pieces in the forms of "Fact Files" (which expand upon a given character from a corresponding episode) airing shortly after each episode.
Can You Keep a Secret?
Ubel Blatt
Zenshu
Grisaia: Phantom Trigger
Ishura 2nd Season
Okitsura: Fell in Love with an Okinawan Girl, but I Just Wish I Know What She's Saying
Welcome to Japan, Ms. Elf!
Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster!
I'm Living with an Otaku NEET Kunoichi!?
From Bureaucrat to Villainess: Dad's Been Reincarnated!
Inferno Cop
