Ceres

Arata and the Trinity Seven visit a southern island to investigate some ruins, and in their deepest part, they find a mysterious, amnesic girl. Together with the girl, who calls herself Ceres, embraced by Arin and Hijiri, they enjoy a brief holiday, but, the world suddenly stops, and a legendary devil ‘Giant of the Nornir’ appears.

Currently, the evil goddess Aryan has taken Ceres's as her host body.