While contemplating his perilous choice to drink the vial of vampire blood, Rentt recounts the story of his past and the events that inspired him to follow his dream of becoming a Mythril-class adventurer. 
I can't promise that.
.لا يمكنني أن أعدك بذلك
Das kann ich nicht versprechen.
No te prometo nada.
No puedo prometer nada.
Je ne peux pas te l’assurer.
Non posso assicurartelo.
Não posso prometer isso.
Утверждать не берусь.