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?!
To think there was still someone among 
humans who could surprise me so.
لم أكن أتصوّر وجود فردٍ بين البشر 
يمكن أن يفاجئني لهذا الحدّ
In der Menschenwelt
Nunca pensé que habría una humana
capaz de sorprenderme así.
Nunca pensé que habría una humana
capaz de sorprenderme así.
Il y a donc des humains
capables de me surprendre comme toi.
Non pensavo ci fosse ancora qualcuno
tra gli umani in grado di sorprendermi così.
E pensar que ainda havia alguém entre os
humanos que poderia me surpreender tanto.
Я и подумать не мог, что меня 
сможет удивить какой-то человечишка.