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 during the Last Crest ordeal, I told 
you the progenitor mage was Pythagoras.
.وخلال معضلة القمّة السابقة، أخبرتك بأنّ الساحر السابق كان يدعى فيثاغورس
Und bei Last Crest habe ich dir gesagt,
dass der Urahne Pythagoras war.
Y durante lo del Last Crest, te dije
que el progenitor era Pitágoras.
Y durante lo del Last Crest, te dije
que el progenitor era Pitágoras.
Durant le Last Crest,
E durante la disavventura del Last Crest, 
ti dissi che il suo mago progenitore era Pitagora.
E durante a provação do Last Crest, eu disse
que o mago progenitor era Pythagoras.