Ren is haunted by the deaths of his party members in a failed attempt to defeat the Spirit Tortoise, and doesn't want to believe that he might be responsible for what happened.  Myne seems ready to take his side and support him, but...
To gain that strength...
...كي أكسب تلك القوّة
Und um diese Stärke zu erlangen, …
Para hacerme fuerte,
me quedaré con todo.
Para hacerme fuerte, me haré con todo.
Pour obtenir cette puissance,
Per ottenere quella forza...
Para ganhar poder...
И ради того, чтобы это осуществить…