Misaki Shimizu is a female professional soccer player associated with the New Tokyo FC Rose team. She has long brown hair that she typically ties up in a ponytail and purple eyes, and she is described as quite tall. She was one of the founders of the Namba Dandelions, a youth soccer club. Her soccer career faced a significant setback when she suffered an injury just before she was to be selected for the Japanese women's national team, forcing her to withdraw from the national team selection process. However, she recovered from that injury and went on to play soccer at a professional level.

Misaki Shimizu is characterized by her determination and high energy, with a deep passion for playing soccer. She is a talented midfielder and is widely considered the heart of her team. Her personality is marked by a strong sense of responsibility and a commitment to high standards, which drives her to work hard and pay close attention to detail in both practice and strategy. She is also compassionate and empathetic, making her attuned to the strengths and weaknesses of her teammates. This nature, combined with her natural leadership, makes her an effective captain who inspires and supports those around her. Her optimistic attitude helps the team overcome obstacles on and off the field.

Her primary motivation is her love for soccer and the desire to help her team achieve success. She serves as an inspirational figure, particularly for younger girls who aspire to pursue sports, demonstrating that women can become great players if they do not give up. In the story, she acts as an experienced professional who influences and encourages the younger characters. Her encounter with the main protagonist shows them that a female player can reach a high level, and she agrees to participate in a mini-game with them, showcasing her impressive skills. This interaction helps motivate the children to improve and believe in their own potential.

Her key relationships include her role as a mentor and source of inspiration for the young players of the Mamoyama Predators, especially the female players. She is a professional player who was once a founder of a youth team, indicating her long-standing involvement in soccer development. Over the course of the series, she demonstrates growth from a promising player whose career was nearly derailed by injury to a successful professional who uses her experience to guide the next generation. Her notable abilities include her advanced technical skill as a midfielder, her tactical intelligence, and her leadership qualities that unite and elevate those around her. She is also recognized for her incredible playing ability, which she demonstrates by dominating in a small-sided game against younger, less experienced players.