Nokoru Imonoyama is youngest son of the Imonoyama zaibatsu, the founders of Clamp School, he has inherited the family fondness of doing absurd things just for the sake of doing them. Nokoru has one of the top IQs in a school full of geniuses and NASA has been vying for the mind of the elementary schooler. He also has the unique ability to detect a lady in distress from two kilometers away. For this reason, he established the Clamp School Detective Agency, although this was also an incentive to get out of his Chairman duties. He is also the only one out of the three young detectives that doesn't play a sport. A 6th grade student and the Elementary School Board Chairman.
Nokoru Imonoyama is the director of the famous Clamp Academy. He personally knew Magami Tokiko through his relative, the former Chairperson of Clamp Academy, and following the events leading to Fūma's awakening as the Kamui of the Dragons of Earth, Nokoru graciously provides the Dragons of Heaven housing, admitting the younger Seals (Kamui, Yuzuriha, Arashi, Sorata and for a while Subaru) to the Clamp Academy at the junior and senior high school levels (and college in Subaru's case).