Yuuki used the Free Guild’s network to locate the seal of the Chaos Dragon. After finding it, he broke the seal and revived the dragon, intending to use it as a weapon. Its rampage served as both a distraction for Demon Lord Rimuru and a way to spread chaos and panic throughout the continent. When Milim found out the Chaos Dragon was on a rampage, she was forced to fight and destroy its astral and spiritual bodies. That Time I got Reincarnated as a Slime Season 4 Episode 11.
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