Arata inadvertently touches "Hermes Apocrypha," Lilith's Grimoire. Suddenly, he is enveloped by a bright white light, and a girl appears before him. She calls herself Lilim, and treats both Arata and Lilith as her parents. At the same time she appears, something changes in the world. The forbidden Eternal Library awakens.
Since Arata-san is a demon lord candidate,
Arata-san ist ein Teufelsanwärter,
Arata-kun es un candidato
a rey demonio,
Arata-kun es candidato
a rey demonio,
Il est le prétendant,
ses rêves doivent avoir un sens.
Arata-san è un Candidato Signore dei Demoni,
Já que o Arata-san é um 
candidato lorde demônio,