Wary of the Human Army's rise to power, Krul calls the vampires to war against them, while Yūichirō and his friends are finally selected to attempt to claim a demon weapon for themselves, despite knowing the risks.

Yoichi eliminates five horsemen with one attack, and Yu begins the next step of his training. Yu battles against Asuramaru in his mind and defeats Asuramaru by asking to become friends. At the Progenitor Council meeting, Ferid discusses the battle at Shinjuku and has Mika present a video showing Yu's transformation. Krul strikes at Ferid and intentionally misses. Ferid explains that she cannot kill him. Kimizuki struggles in battle against Kiseki-o and faces memories where he was told to kill his sister. He breaks free and is victorious by remembering Yu's feelings for Mika, who are family even though they are not related by blood. Kimizuki and Yu show off their new techniques, and Shinoa and Mitsuba learn the files on the three boys have been erased.