After being reunited with his long-lost friend Mikaela, Yuuichirou discovers that Mikaela has been transformed into a vampire. Determined to protect Mikaela and his comrades in the Moon Demon Company, Yuuichirou vows to strengthen himself. As the Imperial Demon Army prepares for a vampire attack in Nagoya, led by Guren Ichinose, Yuuichirou's team is tasked with eliminating the vampire nobles. With the mission looming, the Shinoa squad focuses on honing their skills and teamwork. Yuuichirou must harness his power to defeat the nobles and rescue his friend before he falls victim to the Cursed Gear's demon.