If it's just the Fire Spirit Soul, it can basically be seen as a large group of low-level Demon Beasts with special attributes and formidable strength.
After all, even high-level Demon Beasts can understand human speech.
But the fact that they are Fire Spirit Souls doesn't mean they're better than the Fire Spirit Soul. Although the Fire Spirit Soul is powerful, as long as we can intimidate them, we won't run into much trouble.
This is the advantage of high intelligence; they know when they can't win or believe they might not win, they won't risk it! It prevents any unexpected harm!
However, the opponent is the Fire Spirit Soul, and this type of thing doesn't have high intelligence. As long as they feel threatened, and the opponent isn't overwhelmingly strong, they'll charge ahead like crazy!
Even if it costs them their lives to hurt them, they won't hesitate!
