Juuzou is the 2nd son of the Shima family, his younger brothers include Kinzou and Renzou. As the 2nd son, he has more responsibilities than his younger brothers. Since the 1st son of the Shima family was killed in the Blue Night incident 16 years ago, Juuzou is the successor of the Shima family. He and Houjou Mamushi are childhood friends and attended the Exorcist cramschool together.