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.
and the demon lord 
candidate has fought him.
.ومرشّح الملك الشيطانيّ قد واجهه
und hat nun gegen den
Teufelsanwärter gekämpft.
y peleó contra
el candidato a rey demonio.
y peleó contra
el candidato a rey demonio.
pour affronter le prétendant.
e il Candidato Signore dei Demoni l'ha affrontato.
e o candidato lorde
demônio lutou com ele.