The leader of the Vandenreich—the Quincy military organization—Yhwach is best known for nearly destroying Soul Society and orchestrating one of the most devastating invasions in its history. A thousand years prior, Yamamoto Genryuusai had a fateful encounter with him, though the details of what happened remain shrouded in mystery. Yamamoto failed to kill him then, a failure that would haunt Soul Society for centuries.
Yhwach's most notorious move came when he seized the opportunity of Ichigo's absence to mobilize his most powerful soldiers, the Stern Ritter, and launch a full assault on Soul Society. His orders were brutally simple: kill every shinigami. The invasion proceeded with devastating efficiency until Yhwach himself came face-to-face with Kenpachi Zaraki. The fight was one-sided—Yhwach overpowered Kenpachi with ease, dismissing him as weak. Just as he was about to finish Kenpachi off, an enraged Yamamoto arrived to intervene, forcing Yhwach to shift his focus.
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