The Goddess has been summoning and reincarnating a broad range of people in order to stop the Hero from destroying the world, but they all seem to have ended in failure. However, all the reincarnations that had been conducted until now were for the purpose of gathering data. With the data she has gathered, she summons the person most likely to stop the Hero.
However, I'll end up 
killing you in this duel.
لكنّي سأقتلك في هذا النزال
Allerdings werde ich dich
in diesem Duell töten.
Pero como voy a matarte en el duelo,
no creo que puedas cumplir tu promesa.
Pero como voy a matarte en el duelo,
no creo que puedas cumplir tu promesa.
Cependant, je prendrai ta vie
au cours de ce duel.
No entanto, vou acabar
matando você neste duelo.
Вот только в этой дуэли ты умрёшь.