War of the Fading Dusk

The War of the Fading Dusk (窮暮之戰, Kyubo no Sen, "Dire Dusk's War"), sometimes styled as the War of Fading Dusk, was a battle between humans and demons that occurred two hundred years before the events of ''Thunderbolt Fantasy'.

Story
Originally an unstoppable invasion of the human world by legions of demons, the tide of the war turned when the Shén Huì Mó Xiè were forged.