This was the very last thing Dark and the others wanted to see.
Over the next half month, Dark and the others spent practically all their time dealing with this matter.
The dozen or so demons selected for release remained immersed in the [Brain in a Vat] throughout those two weeks.
Their consciousnesses were linked within the same [Vat], and without realizing it, they experienced everything Dark and the others wanted them to experience.
When they "awoke" once more, they found themselves severely wounded and sprawled amid the ruins of the underground base, surrounded by demon corpses.
Two of them would die after awakening, their injuries simply too severe.
The remaining demons would grow even more terrified because of this, fleeing the base in blind panic to seek out the nearest entrance to the Demon Realm.
The passages between the Demon Realm and the present world were still unstable, constantly appearing and disappearing. However, among them were demons capable of sensing the locations of those passages.
Dark and the others hid in the void until they watched the dozen or so demons enter the passage and flee back to the Demon Realm.
Then, after leaving a mark behind for surveillance, they returned to the underground base and guided the holy knights' squad inside, where they purified all the remaining demon corpses into ash. As for the [Lich], Ian Tucker, he was dead beyond all doubt.
Once everything was over, Dark held a celebratory banquet in [Magic Guidance City].
Principal Arte and the academy professors became the first guests of [Magic Guidance City]. Carrying a faint unease in their hearts, they relaxed with fine food and wine.
If Dark had not happened to encounter Long Liddell during this Demon Realm invasion, there was absolutely no way it could