The wind general got rekt by the hero party because of their new party member
She blame it on the new aide who failed to figure out the hero party got a new member.
Said aide got fire.
While the generals are grumbling about having to find a new aide, the earth general (the girl who kept quiet at the start) spoke up how Dariel was actually doing more than needed of his job.
So much so that after he's gone she finally realized how much the demon lord army need him and that they should go and bring him back.
Fire asshole is not amused.