By Takemachi and Tomari. Released in Japan as “Spy Kyoushitsu” by Fujimi Fantasia Bunko. Released in North America by Yen On. Translated by Nathaniel Hiroshi Thrasher.

We may have finally drained the Avian well dry (or maybe not – I hear there’s another spinoff just started that features them), but that doesn’t mean we’re going back to the main girls for these short stories. In fact, as the cover might suggest, the main girls, with one or two minor exceptions, don’t appear in this story at all. That’s because, despite the formatting, this really isn’t a short story collection at all, it’s a prequel, dealing with Inferno, the spy group Klaus was drafted into years ago, and how they trained him to be what he is today, as well as hinting at their tragic downfall. It honestly may be the best collection to date, and despite the ending being as sad as you’d expect (I am thankful the writer did not go full Se7en on us, but it was close enough that I did not like it), most of this can best be described as heartwarming or funny. Mostly as Inferno have adopted a feral cat. Named Klaus.

In a prologue, we see Guido, who we know well from the start of this series, coming across a terrifying monster who steals food and leaves it with kids. This turns out to be Klaus, who is ten years old and turns out to have been named by Guido. Klaus is feral, and I mean that sincerely. Over the course of the book, we get the other members of Inferno giving their brief opinions of Klaus (they like him, with the exception of the tsundere in the group), we get four stories. 1) Guido takes Klaus on his first mission, taking out a gang, as well as its leader who is busy trying to train his eldest daughter Sybilla to be a murderer; 2) Gerde takes Klaus on a mission to see who is killing a politician’s allies, and Klaus starts to gain empathy; 3) the twins take Klaus to another country to learn how to read people and also the fine art of triple crossing, and 4) Heide and Klaus go to see why their agents keep disappearing, and Klaus learns some unfortunate things. Well, unfortunate for him, Heide seems happy.

Heide was probably my favorite part of this book (and I was highly amused at the author writing it so that it made emotional and storytelling sense that they had sex, while at the same time leaving an out just in case it needs to be taken back later). Heide is an annoying older sister-style brat, but like a lot of those she is annoying out of love. Really, the whole group is great. Unfortunately, as Veronica points out, Klaus has gotten TOO close with them, too involved, and throughout this book we see her and Guido yelling at each other in the background, and we know how that turns out. The final story, written for this book (the other four were in Dragon Magazine) shows us where Klaus was when Inferno were wiped out, and the answer is “in a horror movie” essentially. Still, Klaus ends up taking the right lesson from his time with Inferno, and resolves to build a new family for himself. It’s really sweet, in a tragic spy sort of way.

Also check out the afterword, which has the author’s “stories that will never be written”, some of which are funny, and some of which are kind of creepy. The anime may have tanked this series,l but the books are still great.