He is entirely focused on soccer, to an almost obsessive degree and is also very egoistic, as he is always putting his goals first over everybody and their motivations. Rin has a lot of pride as a striker, which borders on arrogance, since he frequently describes other people’s soccer and way of thinking as “lukewarm” or “mediocre”. These mannerisms and behaviors came from his brother (Itoshi Sae); in an attempt to be like his brother, Rin copies his words and embodies his mindset.