His initial response was a faint snort. What Jack said wasn't too concrete or helpful at all. Still, that's why Yuan relied on his help in the first place. When it came down to curing this disease, the samurai was useless to him, but stopping it was another matter entirely. The sword would vanquish Aku for certain, even if it came with a price.

"Inner peace." He spoke those words with much contempt. "Aku thrives on negativity. The only way to vanquish him... is finding the inner strength to defeat him."