One thing you must understand is this:
Just as there exists a wide gap between Sequences from low to mid tiers, and then from mid tiers to high tiers, so also is there a massive difference between Chaos Dwellers in terms of their Tiers.
In fact, for Chaos Dwellers, the difference is pronounced even from the low tiers.
Tier 9 can be defeated by normal people.
Tier 8 can only be defeated by those who possess Ancient MajiK and can use corresponding Sequences of a Technique.
As for killing a Tier 7…
… One must at least be a Senior of the Academy to achieve this feat.
Normal people would be dead before they knew it. Even those who had awakened their Ether Core and could use Ether would be mere fodder before a beast like this.
Only those properly trained by the Academy, having reached a sufficient level of mastery in their respective Arts could stand a chance.
That, or being a genius like Amara.
But Rey didn't belong to any of those categories.
