Trinity Seven

Arata Kasuga enrolls in the Royal Biblia Academy and meets the Trinity Seven, a group of female magic users.

Arata and the girls are trapped in a room by a magical seal; the group tries to figure out how to escape; amidst the panic, Arata's power is unleashed.

Arata begins to learn about the magical world he finds himself in, including the magic seven archives and spells.

The group realizes that a recent breakdown was caused by one of the Trinity Seven losing control.

A strange figure appears during a thunderstorm at the academy; Mira deduces that the magic trace from the mysterious person matches another incident in the Eternal Library.

The dark mage Liese is in possession of a demon lord seal and attacks; she steals not only Selina's magic, but Arata's as well.