Mortal Sky Heaven

"Is this even possible?" A dwarf figure questioned with uncertainty. 

The Union Lord nodded, "As long as you're as strong as the Union founder, anything is possible." 

"Who was the union founder, and what was he doing in this place?" The devil asked. 

"A legendary character enshrouded in mystery. His traces are everywhere. Even in our place, he left a part of his legacy there as well." The Union Lord stated matter-of-factly, "But the mortal sky was different. I stumbled upon an extremely ancient ruin in a secret realm, and only then did I find clues about his presence in the mortal sky. Here, he left something that had caused an unimaginable war in a bygone era. That war shattered the sky and grind the earth. There was only a small detail about it.