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...
I won't accept anything less 
than being the strongest!
!لن أقبل شيئاً أدنى من أن أكون الأقوى
Ich ertrage es nicht,
wenn ich nicht der Stärkste bin.
¡Tengo que ser el más fuerte!
¡Tengo que ser el más fuerte!
Je supporterai pas
de pas être le plus fort !
Non posso sopportare di non essere il più forte!
Eu não vou me aguentar
se não for o mais forte!
Потому что я желаю одного —
 быть сильнейшим!