"Protect the children!" Major Pain roared but there was no one to listen to his orders, because just like him and the Principal, all the instructors were preoccupied with fighting for their own lives.
The Demon planned for months before this attack. They didn't succeed in killing Major Pain like expected, but this was also part of their plan.
They had a contingency plan in place.
The plan was to deal a devastating blow to the heart of the Human domain. Trusting that Kravos Bone-Tyrant, Zahrim, and Vaelith were doing their jobs in their designated targets, they focused on their own job.
Killing Major Pain, an S-Ranked Hero of humanity was dealing a major blow, but if they could not, killing dozens of instructors ranging from D Rank to B Rank was also dealing a major blow.
And most importantly, killing the younger generation who were the future of the human race was dealing a major blow to the human's foundations.
They planned it perfectly.