「破滅ノ門」を開き、陰我のある人間を駆逐しようと企むムツギ(黒谷友香)。ムツギの策略で心の闇にのまれた白羽創磨(仲野温)は、正気を失い、門の封印の要である白羽ゴドウ(萩原聖人)の鎧・ザンゴの心滅獣身態に剣を突き立てる！創磨の暴走を止めるため、剣を交える道外流牙(栗山航)。一方のコヨリ(中澤実子)は、葛藤を抱えながらもムツギに立ち向かっていく。しかし、刻一刻と心滅獣身ザンゴの封印は解かれていき・・・！
Mutsugi plans to open the Gate of Destruction and drive out humans with Inga. Souma Shirahane, who has been engulfed in his soul's darkness by Mutsugi's trickery, loses his sanity and thrusts his sword into the Lost Soul Beast form of Godou Shirahane’s Zango armor, which is the key to sealing the gate! Ryuga Dougai crosses swords in order to stop Souma from going out of control. On the other hand, Koyori stands up to Mutsugi even though she is conflicted. However, the seal of the Lost Soul Beast Zango is broken with each passing moment...!
