Miyamoto Dai was originally a regular high school student until Shuhei brought him to a jazz concert. From that day onward, Dai has sworn to become the best jazz player in the world. After leaving Sendai, he formed the jazz band 'JASS' with Shunji Tamada and Sawabe Yukinori. He notably performed at the Katsusha Jazz Festival, and SoBlue. After this, Dai left for Germany where he met his current bandmates; Hannah Peters, Bruno Kaminsky and Raphaël Bonneau, with whom he plans to become the best band in europe. (Source: Blue Giant Wikia)