"In the history of the Eastern Continent, the name 'Green Leaf Village,' never once appears. Even as the Green Hat Immortal rampaged, no one could locate his hideout, suspecting that it shifted to whatever place he fancied. Little did they know that, all along, this mysterious brume concealed the immortal's home and various achievements.
You can't blame them though, the brume existed long before the Green Hat Immortal became a thing, and was just altered so the Green Immortal Sword Art would become its key".
"Why is that village so important to you, anyway?"
"You don't know?"
"Why should I know?"