November 21, 2050, is the day of shame and mourning for mankind, and the beginning of "Paradise Lost". The gates of hell will be opened to mankind on that day. Creatures from other worlds, demons that should not be in the world, flooded into the human world. However, in just a few years, Oceania, Europe, and South America fell one after another, and the spear of war was unstoppable. At the same time, the five major families in the shadows rose up and seized world power overnight. They used the power of the entire family to barely resist the wave of invasion.
But peace is as fragile as gauze. Just a few decades later, aliens crossed the Indian Ocean and invaded Japan. Overnight, Japan was destroyed, and the Fuma clan, one of the five major clans, was destroyed! Humanity is once again in danger.
Survive or perish, succeed or fail? We are standing at the gate of hell, and behind us is the abyss! The final bet, is it to be the winner or to be devoured by the fire of hell?
And everything started a hundred years ago???! ! !