Goro and Kaoru's son. Izumi's younger brother. Daigo had always dreamed of becoming a great baseball player just like his father and retired major leaguer, Goro Shigeno. He eventually joined the Mifune Dolphins, only to be despaired by the results of his mediocre progress.
Feeling unable to reach heights just like his father, Daigo gives up on baseball entirely with no motivation or goal in his life. Two years later, a new transfer student from America arrives and the crossroads of destiny begins to turn again for Daigo.
