After serving as captain of the Karasuno Volleyball team, Daichi became a police office for Miyagi prefecture in the Community Safety Division. Daichi is a very caring and responsible person who always puts others first. He is also very patient and understanding, but becomes terrifying when angry, though he only shows this side when necessary. He becomes very strict when people are out of line, but his actions are always in the best interest of others. He is earnest, mature, and independent. 