Throughout the series, Yoichi Isagi's leadership skills evolve as he gains more experience in leading his team on the field. Initially, he may struggle with asserting himself and making decisions under pressure. However, as he faces various challenges and learns from his mistakes, Yoichi grows more confident in his abilities to motivate and inspire his teammates. His communication skills improve, and he becomes better at strategizing and adapting to different situations, earning the respect and trust of those around him. Overall, Yoichi's journey in the series shows a significant development in his leadership skills, turning him into a capable and respected captain.