Heavens Library & Crimson Lord brings back Arata, Lilith and the rest of the Trinity Seven to face off against the greatest enemy in the history of the Trinity Seven; Lilith’s own father, who is revealed to be the strongest Demon Lord who challenges Arata who is now a Demon Lord candidate.
That demon lord we fought destroyed it all.
.ذلك الملك الشيطانيّ الذي واجهناه قام بتدميرها كلّها
Der Teufel vorhin hat es plattgemacht.
La destruyó ese rey demonio.
La destruyó ese rey demonio.
C’est le maître pourpre.
Il Signore dei Demoni 
che abbiamo affrontato l'ha distrutta.
Aquele lorde demônio que
lutamos destruiu tudo.