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...
This is impossible.
هذا مستحيل
Das ist unmöglich.
Es imposible.
Es imposible.
C’est incompréhensible.
Non può accadere una cosa simile!
Não é possível.
Бред какой-то.