Mito Aizawa is a supporting character in the anime The Knight in the Area. She is the younger sister of the two central brothers, Suguru Aizawa and Kakeru Aizawa, and the daughter of Mamoru and Eiko Aizawa. As a student, she is a regular presence in the family home and at soccer events related to her brothers. Mito has brown hair, usually tied in two pigtails, and brown eyes, and she bears a closer physical resemblance to Kakeru than to Suguru.

Her most defining trait is her intense fandom of the star player Leonardo Silva, whom she supports with great enthusiasm. This passion for Silva serves as a lighthearted counterpoint to the more serious soccer ambitions of her brothers. Within the story, Mito primarily appears in domestic or supporting scenes, offering encouragement and reacting to the developments in Kakeru’s return to soccer after his brother’s death. Her relationships are centered on her family, especially her role as a younger sibling, and her admiration for Silva. No notable physical or soccer-related abilities are highlighted for her, and her character does not undergo significant personal development over the course of the series.