Ness led everyone into the mirror. When they emerged from the mirror again, they arrived at the outer area of the mirror world, Tree Shade Garden.
Ness explained to them while walking ahead, "There are three ancestor souls in Brute Cavern. Lady Mirror at the entrance, the Tree Spirit here, and the Elder of Books hidden in the library. They have been alive for a very long time, and no one knows where they came from. These three souls protect Brute Cavern from falling."
"Mister Wizard… How strong are they, compared to you?" Hookdick asked Ness politely.
Ness glanced at him and humphed, "The might of ancestor souls cannot be described and certainly isn't something that can be explained by the likes of us. The only thing you need to know is that the ancestor souls are the guardians of Brute Cavern and no one should ever defy them."
