In the chaotic mix of humans and demons, Shu and Kanna meet in a violent clash worthy of their 12-year-gap as various motives intermingle in a battle engulfed by a sea of flames. Ayano, Sharon and Kisara try to somehow intervene in the siblings' fight that puts the fate of the world at stake. The only way to stop a powerful demon is with the power of a demon. Shu and Kisara join hands once again. Will the accumulation of their feelings reach Kanna, embroiled in her rage? At the end of the battle, what future lies ahead for humans and demons alike?
After all, I thought I should say goodbye to you
as we put our lives on the line and fought together.
بعد كلّ شيء، ظننت أنّ علي وداعك
.بما أنّنا جازفنا بحياتنا وقاتلنا معًا
Ich wollte dich wenigstens verabschieden, wir
kämpften immerhin Seite an Seite ums Überleben.
Ya que arriesgamos la vida juntas,
pensé que debía despedirme.
Ya que nos jugamos la vida juntas,
pensé que debía despedirme.
On a risqué nos vies
au combat ensemble,
Ho pensato di doverti almeno salutare, 
visto che stavolta ci siamo battute fianco a fianco.
Achei por bem me despedir de você, depois
de lutarmos juntas no campo de batalha.
Всё-таки решила попрощаться с той, с кем я,
стоя плечом к плечу, сражалась насмерть.