Director Nakao coaches the Seishū High School baseball club and is the father of team manager Yuri Nakao. His coaching position hangs by a thread due to the team's chronic losing streak and lack of wins before talented pitcher Eiji Kurahashi arrives, with the club facing potential disbandment without success. Nakao previously coached Kentarō Yamanaka during his childhood, revealing a long history in baseball mentorship. Kentarō, now the ace pitcher for rival Bunan High School and harboring feelings for Yuri, creates a complex dynamic between the former mentor and student.