From his high school entrance ceremony onward, Jin Takahara embraced delinquency within a biker gang, generating constant turmoil. His disruptive actions repeatedly edged him toward expulsion. School officials identified extraordinary power in his throwing arm, presenting an ultimatum: join the baseball club or face removal. Despite initial disinterest, he accepted the deal to retain his place.

A pivotal shift followed a decisive loss against Jindo, the elite high school batter. This defeat ignited Jin's competitive drive, fueling a newfound dedication to baseball. He committed earnestly to refining his skills and supporting the team while actively trying to sever ties with his delinquent history and its lifestyle.

This resolve faced a severe test upon reuniting with an old friend, an encounter that unexpectedly anointed Jin as the new leader of a legendary gang. The role entangled him in persistent gang conflicts and obligations, forcing him to balance these against his baseball pursuits. This friction between his athletic ambitions and the gravitational pull of his former existence became central to his life.

Jin's trajectory charts a progression from reckless troublemaker to engaged team-sport athlete, yet he remains continually challenged by the lingering consequences and connections of his past decisions.