Precursor-Ylikith Wars was a series of wars between the Precursors and Ylikiths that occurred around 650 Centrillion BNE to 615 Centrillion BNE, these wars are often brutal and destructive with many parts of the Multiverse at the time destroyed, but, the Wars eventually ended in the Precursor's victories and the first extinction of the Ylikith Species. Although nothing is known about the wars, however, what is known about it is these conflicts were one of two reasons that eventually lead to the Precursor's extinction

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