Dexis32
Two weeks before Issei Hyodo is turned into a devil, a new shop opens near Kouh Academy. As time goes on, Rias notice's that Koneko begins to shut herself off and shows up less for the club while becoming much quieter, well, even more so than usual.
What she doesn't know is all will be revealed when a certain war hungry fallen angle tries to kill the neko, bringing him a fate worse than death.