Cassy saw in one of her visions a fire spell of incredible power that was going to devastate everything around them, and that was why she told the boys to get behind her.
After Cassy's demonstration earlier when she had spoken with her flame, Adrian didn't hesitate long before doing what she had asked them.
Actually, he didn't feel guilty at all about protecting himself behind a girl, because Cassy was the Divine Mage after all, and her mother was also a legendary Mage, so he didn't doubt anymore that she could take care of some magic beasts on her own, he was even eager to see what she was capable of.
Cassy immediately surrounded them with a powerful shield of fire and the boys then finally saw the fire spell that Cassy had seen in her vision.
And as this fire spell, which really looked like a firestorm, was about to hit Cassy's shield, she ordered her flames, "Don't just push the fire away, absorb it, and prepare to counterattack."
