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Something no Outer God expected to happen happened. All of them had thought Kireina was within their grasp, that she was merely a little puppet dancing in the palm of their claws. But couldn't be farther from the truth. With a roar of space-shattering might, Kireina tore apart Shub-Niggurath to pieces and ate her completely. And no, there weren't any coming backs. Shub-Niggurath wasn't going to reveal she was fine later, or that Kireina fought some sort of doppelganger of her.
The real deal was dead and would remain death for eternity. Kireina's powers skyrocketed after devouring that Outer Goddess. The Avatar that she had sealed inside of her World Realm also died the moment her true body did, dissipating into a mist of darkness and completely disappearing from existence.