The Satanic Wars

(A/N: This story is based on a creepypasta I watched. You'll see the videos in the trailer. My main OC military faction is the Terran Union. You can find out more in my book titled 'My Military Factions (Heroes)' to know more. My main OC character is Logan Walker who you can find in my book titled 'My Hero Characters' to know more.)
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Summary: God... the Lord Almighty... Ruler of Heaven and Earth... Supreme Ruler of Creation... is dead. No one knows how it happened, but somehow Lucifer was able to gain the power necessary in order defeat God and kill him. His death would trigger a series of events that would lead to the fall of Heaven and bring about an age of darkness and horror like no other. With Lucifer in control of Heaven and most of the Angels are either dead or hiding, he turns his sight towards humanity where he exterminated them and sent all of their souls to be tortured. However, Lucifer wanted more power and soon discovered the multiverse where there are infinite versions of humanity. Seeing an opportunity to claim dominion over all creation, the Legions of Hell invade the multiverse as they begin a campaign of genocide against humanity from various parallel Earths and Universes. The surviving Angels try to help the various versions of humanity fight off against the demonic forces of Hell, but their numbers are too few and many more die as a result. Terror and horror the likes of which creation had no one had seen since the War in Heaven has spread across multiple worlds. Civilizations have fallen to the demonic onslaught and there is no end in sight. No one can stop the Legions of Hell as they seemed unstoppable and soon creation will fall to the forces of Evil. Yet in the midst of all this darkness... hope remains. That hope... being the Terran Union.
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Pairing: Logan Walker x Harem