The final battle between humans and demons has begun. The Zweilts charge into battle with hearts brimming with emotions and desires. Yuki suffers at the sight of those he loves coming to harm as he watches Luka fight Reiga. Luka does not back down from Reiga's powerful attacks. Their fierce battle is interrupted by a young man very similar to Luka in appearance.

Yuki has fallen into Reiga's hands. Having Yuki stolen from him in front of his face, Luka is unable to conceal his frustration with his own powerlessness. Hearing the voices of his allies, Luka returns to his senses and decides to rescue Yuki with his friends. Takashiro also searches for Reiga with the intention of rescuing Yuki. Meanwhile, Yuki awakes to find himself unable to move as a prisoner of Reiga.

Reiga and Cadenza retreat to Infernus, granting everyone a temporary reprieve from battle. Having pushed the limits of his power, Yuki loses consciousness and collapses. Witnessing the damage Yuki suffered in battle, the Zweilts gathered at the Kamakura mansion renew their promise to end the war.

Yuki, Kuroto and Senshiro challenge general class opast Cadenza, but quickly find themselves overwhelmed by his incredible power. Cadenza sets his sights on God's Light and attempts to deal the killing blow. Their enemy Reiga comes to their rescue in the nick of time. Yuki sees traces of Kanata in Reiga's face.

Deeply concerned for his master Takashiro, Fuyutoki feels frustration with his inability to do anything but simply wait. Inspired by his words, Yuki disobeys Takashiro's orders and leaves the mansion to search for Luka. Meanwhile, Reiga summons Kuroto and Senshiro's nemesis Cadenza and vigilantly watches for an opporunity to attack the Giou Clan.

Sensing the end of the battle approaching with the appearance of general class opast Elegy, Takashiro summons Hotsuma and Shusei to Kamakura. Unable to sleep, Yuki listens to Kuroto's story of meeting Senshiro and the events of four years prior that led to Senshiro becoming a Zweilt.

Takashiro reveals to Yuki everything that happened on the setting of Taurus. Takashiro plans to put everything on the line to make this his last battle with Reiga. Yuki resolves to support Takashiro and his friends in their fight against Reiga. Worried about Yuki, Toko and Tsukumo leave the Twilight Mansion and head to Kamakura.

A thousand years ago during the Heian Period, the Giou Clan lived quietly within the barrier they erected in the moutains. Takashiro left the village with a group of Zweilts to respond to the Imperial Court's request for help, and when he returned he found Reiga enveloped by a horde of demons and darkness.

In order to stand a chance in his endless battle against Reiga and his army of Duras, Takashiro had gained immortality by keeping a Duras inside his body. Yuki is shocked to hear Takashiro has been alive for more than one thousand years since the Setting of Taurus. Takashiro claims everything he has done was with the aim of finishing this endless battle with Reiga.