At first, he was an excellent team player and leader for his middle school squad, seeming to have a friendly relationship with several of his teammates. Nevertheless, because of his conflict with his brother, he has turned distant, curt, and excessively serious. He is completely absorbed in soccer, to a nearly obsessive extent, and is quite self-centered, as he consistently prioritizes his ambitions over the aspirations of others. Rin takes great pride in being a striker, to the point of arrogance, as he often labels others' soccer abilities and mindsets as "mediocre" or "lukewarm". These mannerisms and actions originate from his brother; in trying to imitate him, Rin mirrors his speech and adopts his mentality.
Rin appears to have little respect for anyone. He will only recognize players who possess a prominent skill or impact on the field. By the time of the Japan National Representative match, he is clearly more communicative with the team, providing instructions on the field
Speaking style
Speaks in clipped, command-like sentences; overuses soccer metaphors; calls others “mediocre” or “lukewarm”; rarely smiles and ends statements like verdicts.
