This is a world of iron and magic. Those wielding the power of guns and fire lifted a corner of history's veil, revealing a dark and mysterious past. Everyone who witnessed it has already gone to the pitch-black depths of hell.
When he returned from another world, he had eyes black as night and a pair of black wings. He looked up at the black sky and swung his sword, dancing like a gentleman in a black suit...
His footsteps carried him across the whole world, and countless souls were imprisoned beneath his guns and swords... Everything...
"Ah, all right, all right, that's enough. Stop bragging. I just want to be a proper adventurer in peace."
