Japanese Imperial Demon Army
Shinoa Hīragi
A sergeant in the Moon Demon Company. After exterminating a vampire in Nagoya, Aiko observes her team coming back unscathed. Makoto Narumi attributes their success to her while teasing Aiko.
Yūichirō Hyakuya
One of the rookie soldiers who posses a Black Demon. A member of Shinoa Squad. He offers to keep watch while Aiko's team rests after killing their targets in Nagoya.
Guren Ichinose
Commander of the Moon Demon Company. Aiko observed his practice battle with Shinoa squad and summarised that must have ben the punishment for their lateness. She holds respect for him and follows his orders, namely remain behind to tell newcomers of the plan during the vampire noble operation in Nagoya.
Makoto Narumi
A sergeant in the Moon Demon Company. After exterminating a vampire in Nagoya, his team came back unscathed. He teases Shinoa Hiragi by giving her the credit for their success.
Vampires
Mikaela Hyakuya
A vampire soldier who confronts Aiko in Nagoya in an ambush. She is held by him and hears he says he has questions for her. During their brief meeting, she comes to understand him pretty quickly and trusts him. She gives him Yuichiro Hyakuya's location while giving false information to Lacus and René. At the end, she begs Mika to kill her to avoid capture and torture from other vampires, but he tells her to do it herself. She attacks him, and he ends her life. She whispers her thanks as she dies.
René Simm
A vampire soldier who confronts Aiko in Nagoya.
Lacus Welt
A vampire soldier who confronts Aiko in Nagoya.