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Shortly after the Great Wall was built by the Holy Kingdom, the nation suffered the greatest intrusion into its lands. In a night attack, launched by a race called the Srush, the demi-humans used their sucker-cup hands to scale the man-made barrier.
The Srush, after crossing the wall, headed west in which resulted in quite a number of villages being lost to the demi-humans.
The tragedy of the event still echoes to the current time, with rumors that the Srush were still hiding within the borders of the Kingdom. Though this invasion was seen as the worst in the history of the Kingdom, the invasion led by the Jaldabaoth would most likely eclipse this event in comparison.