Sōya Akizuki stands as a primary protagonist in his team's narrative, fulfilling the goalkeeper role with exceptional reflexes and rapid mental processing during matches. His influence extends beyond athletic prowess, positioning him as the team's emotional core. He motivates teammates through difficult moments and fosters deeper connections via sensitivity and empathy, contrasting his outwardly strong demeanor.

A defining element of his character involves grappling with persistent self-doubt about his goalkeeping abilities. This insecurity surfaces in critical gameplay situations, occasionally causing errors. His development focuses on steadily overcoming these internal struggles through sustained determination and teammate support, evolving into a more resilient and dependable player.

Personality analysis identifies him as an ISTP within the Myers-Briggs framework, emphasizing traits like practicality, logical problem-solving, and a preference for independent action. These align with his direct approach to challenges and initial hesitation to rely on others. He is further categorized as an Enneagram Type 3 (The Achiever), driven by intense desires for success, recognition, and validation. This fuels his competitive nature, goal-oriented focus, and adaptability in refining techniques to prove his worth, though it may also prompt occasional self-centeredness or intense reactions to setbacks.