Seiichi and Saria train under Artoria to become adventurers. During their training the three of them are teleported into a dungeon by a demon’s trap.

The dungeon they find themselves in the stronghold of the Black Dragon God, the strongest member of the Demon Lord’s Army. Artoria gets separated from Seiichi and Saria in the dungeon and the giant Black Dragon God appears before her. Then that overwhelming threat attacks! Can Seiichi and Saria save her in time?!
Artoria-san is precious to us!
!آرتوريا-سان ثمينةٌ لنا
Altria-san ist uns total wichtig!
Artoria es muy importante para nosotros.
Artoria es muy importante para nosotros.
Altoria est déjà
notre précieuse amie.
Artoria è molto importante per noi!
A Artoria-san é uma pessoa preciosa para nós!
Артория очень нам дорога!