Though Iemitsu had never laid eyes on the Guardian of the Mist, he knew the person Tang Xiaotian spoke of must be exceptionally strong.
Coupled with the events of the recent past, Iemitsu guessed that person had to be Rokudo Mukuro.
"Don't worry, you don't need to pay him any mind at all. After all, when it comes to illusions, I am the strongest, and naturally, my disciple is the strongest as well."
Chapter 463