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.
These girls, known as the Trinity Seven, 
research their respective Archives
Sie, die Trinity Seven,
erforschen ihre jeweiligen Archive
Estas chicas son las Trinity Seven,
e investigan sus propios Archivos
Estas chicas son las Trinity Seven,
e investigan sus propios Archivos
Les Trinity Seven étudient
leur archive respective
Queste ragazze, conosciute come Trinity Seven,
fanno ricerche nei rispettivi Archivi
Essas garotas, conhecidas como Trinity 
Seven, pesquisam em seus próprios Arquivos