Shou is the dependable leader of the male prism group called Callings. He has light brown hair. He is described as perfect but can lose it sometimes. He is the designer of the famous clothes shop that became Aira's called Prism Stone with clothes in stones. In the beginning he didn't think much of Aira because of her skills but he gradually started to accept her and take interest in her especially after she helped him design a new type of clothes. He kissed Aira on the forehead when they first met. He has grown to become worried for Aira whenever she wants to or does something reckless. (Source: tv-tokyo.co.jp)