Interesting Dark Legend

This is an era when science is budding, steam is filling the air, and the fire of civilization is burning. This is a world with hidden mysteries. One day, the ancient darkness broke through the seal and struck again. That day, countless cities were shrouded in mysterious power, legendary ethnic groups came back to their respective old lands, and the black evil aura spread across the entire continent. When the shadows that cover the sky pass across the sky, the deceased climb out of the grave, arrows and bullets collide... On this day, Roy embarked on an unknown journey...