Sae Itoshi, a prodigious soccer player in Blue Lock, is known for his confidence, tactical brilliance, and aloof demeanor. His complex personality is shaped by ambition and strained familial relationships, particularly with his brother Rin. Sae pushes others to greatness, albeit with a harsh edge, and values excellence in all aspects of life. While demanding in relationships, his actions reveal deep care and loyalty, making him a compelling figure of talent and intensity.