Despite his supposed lack of intelligence, Kazushi is very skilled at gathering and handling information, showing an almost universal knowledge of the delinquent world, to the point of being called "Encic".
In Takemichi's own words, Kazushi is described as a dumb-ass who wears glasses because he believes it would make him smart. However, he is actually surprisingly adept at learning topics that interest him, such as gangs. His knowledge is reliable and has helped his friends out countless times