"Enemy?" Diana asked.
Jack didn't explain his words to Diana. He instead asked Severus, "How about opening just a little gap for a small team to enter and close it again after that? I don't think the demons will expect that a gap will suddenly open in this dome."
Severus pondered Jack's suggestion and said, "Well, that is doable. But whoever wants to go in like that is either insane or has a death wish. Do I need not say again that a mythical-grade demon might be waiting inside?"
"But their number can't be that many, right?" Peniel joined the conversation. "Original demons from the underworld require corrupted mana from that realm to survive. If the portal has shrunk down, the corrupted mana will lessen. This limits the number and also the power level of the demons that can exist behind this dome."