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The Forbidden One's Ego had once more revived, this time in an uncharted island where one of the temples harboring several pieces of the forbidden one's fragments were resting! He had absorbed all these pieces and gained unprecedented powers. However, he quickly started to go berserk, losing his own mind, and devouring any monster that emerged, he had thought about this and planned it, but somehow within his mind he felt an incredible hunger, perhaps because he missed a large piece of the ego fragment he used to be, and even when his mind was copy pasted into it, he couldn't completely control all the power of the other fragments yet, and desire more and more biomass.
Check "The Protagnist's Sister Is Actually the Strongest"!