Omniverse at War

2048

At the height of the Siren War, a Siren superweapon known as the Quantum Imploder was fired in the middle of the Bermuda Triangle. Expected to wipe out all human cities in one shot, it in avertedly torn open rifts in the very fabric of not just the universe, but the whole of space-time itself.   As a result, multiple powerful factions poured out of these rifts across the Milky Way culminating into a 15 year long conflict known as the Omniverse War.