Karasu tends to look down on people he find 'mediocre'. He is intelligent, but has a sharp tongue and never misses a chance to insult someone, whether friend or foe. Rin is the younger brother of Sae Itoshi, who started playing football with him at a young age. He has played as a forward on every team he was on and has always been regarded as one of the top players. Shido is an eccentric player in Blue Lock who has a strong penchant for violence or, more specifically, physical altercations.