Dome of Gaia

"Frederick, what do we do?" Lance asked their former guildmaster who had long since lead them in battles.

The red haired man shook his heas, sighing as he massaged his forehead. "I… I don't know."

"I think I can break that shield," Mammon said. "But I can't do it alone. Irus, Leviathan, Saitan, let's go break this thing."

"Wait," Irus stopped. "This shield is also known as the Dome of Gaia is not just an ordinary shield. There are conditions that makes it difficult to destroy especially from one side. Daniel, tell us. When you shattered the shield earlier, was it hard?"

Daniel shook his head. "It was rather easy, as if I was breaking glass."

"Exactly," Irus said. "The Dome of Gaia was used by me and one side is practically invincible while the other is fragile. I used to to store food back when my siblings used to steal from me."