The battle was bloody and brutal.
The giant beasts were wailing, and the monsters were roaring.
The ground was stained red with blood, but it turned to dust under the monsters' blows.
In the school, the five Rule Monsters slowly regained their human forms, although some of their bones remained twisted as they staggered towards the battlefield of the Giant Beast.
Rule Monsters are particularly difficult to kill; they have no weaknesses.
There are only three ways to kill them.
1. Create a situation where they break their own rules, ultimately resulting in a rule conflict.
2. Kill them with brute force. Each time they regenerate, they require some Power of Rules from the Rule Zone. By killing them repeatedly, perhaps after hundreds of attempts, they can truly be killed.
3. Find the core of the Rule Zone, destroy this core, and the whole Rule Zone will disappear, along with the Rule creatures within it.
Aside from these three ways, they are invincible.
"Roar~"
