The Zetsumei clan was formed within the Land of Lightning 120 years before the Kyuubi attacked Konohagakure. During this time, the Daimyo were currently going around the country, kidnapping children that express a large pool of chakra. The Sorcerer that stood by his side possessed the ability to find, sense, and track individuals through their chakra. This ability extends to telling when a person is lying from the fluctuations in a person's chakra made from dishonest emotions.