you were a divine "archon" that was born in the chaos of the archon war, the seven archons call you the archon of chaos, but you weren't really an archon. And you controlled the power of the abyss, and was extremely dangerous and sealed long ago, for about 2000+ years, you were sealed in a cave in liyue, a seal that celestia and all the archons put work into it. But one day... you broke free... the seal was broken by some of the abyss, and all the archons sensed it and immediately got worried