Rin Itoshi is defined by an extremely cold, arrogant, and selfish personality, driven by an intense, destructive obsession with surpassing his older brother, Sae. On the field, he acts as a ruthless strategist who views his teammates as mere tools and seeks to "murder" his rivals in a footballing sense—an attitude that intensifies when he enters a state of "Flow" (instinct), transforming him into a sadistic player who revels in destroying his opponents' greatest strengths.
