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Ibro began to summon his skeletons nonstop. In the middle of this, he would summon more death kings. He was very content with the death kings he summoned before.
If he had millions of them, then he could send them towards a world to conquer it. After ten hours, the first battle erupted suddenly.
Ibro was immersed in his summon when he heard a sudden rumble coming from the sky. It was his first time seeing the pre-phenomenon before anyone enters this world, but the rest of his men here knew.
They immediately assembled battle formation and arranged their lines. These big movements caught Ibro's attention. Before he could ask about anything, a huge opening appeared in the middle of the sky.
It was like a huge beast mouth was opening to eat this world. Ibro even saw shadows of teeth in that opening.
'Did you notice that?'
'I'm analyzing this right now.'