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.
Well, it may be that 
Lilith-sensei has a secret.
.يبدو أنّ ليليث-سينسي تخفي سرًّا ما
Weiß nicht.
Puede ser que Lilith-sensei
guarde algún secreto.
Puede ser que la profesora
guarde algún secreto.
Elle devait
nous cacher quelque chose.
Beh, forse Lilith-sensei nasconde un segreto.
Bom, pode ser que a
Lilith-sensei tenha um segredo.