The council's rampage sends quakes through the demon realm, and the demon Chaos is called forth through a giant magic circle. That commander of all heroic spirits flails madly, seeking to claim Basara, Mio, and Leohart's lives. Do they even stand a chance of victory with this supreme being before them?!
Meanwhile, Maria, Yuki, and the others put a final end to their own personal battle.
"Believe in me... once more."
The ultimate sibling combo risks their lives to face the disaster striking all of the demon realm!
The best thing for cold 
nights is hot, wet action!
An kalten Tagen ist heiße,
feuchte Action das Beste!
¡No hay nada mejor que un poco 
de acción en las noches de frío!
¡No hay nada mejor que un poco 
de acción en las noches de frío!
Les nuits d’hiver, rien ne vaut
une partie de jambes en l’air.
Cosa c'è di meglio che scaldarsi 
con un po' d'azione in questa notte gelida?
O melhor a se fazer em noites 
frias é ficar quente e molhadinha!
Всё-таки холодными ночами надо идти до конца!