User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-96.41.73.217-20150821174625/@comment-3045936-20150825025340

Maybe the moment God and Death they came into being, the Darkness started the War against them like how an immune system works. However, despite not being able to destroy the Darkness, he was able to repel it from harming him. Theory.