Midori is the daughter of Saheiji, a police detective serving under the Tokugawa shogunate, and she is engaged to Sabu, the young investigator who works for her father. In the original manga and anime, she is introduced as a kind-hearted and gentle young woman who deeply cares for Sabu and often worries about his safety during dangerous cases. Her background is closely tied to her father’s position; she lives in the same household and frequently assists by providing information or emotional support. Midori’s motivations center on her love for Sabu and her desire for a stable, peaceful life together. She occasionally displays a streak of jealousy when she perceives other women showing interest in him, but her overall nature is loyal and devoted. As the story progresses, her role evolves from a supporting character and romantic interest to Sabu’s wife, and she later becomes a dedicated partner who helps him manage the demands of his work as an official thief-taker. After Saheiji’s death, she marries Sabu and stands by him through the challenges of his career, eventually bearing him a son. Midori does not participate directly in physical confrontations or investigations, but her quiet strength and steady presence provide Sabu with a sense of normalcy and purpose. Her notable abilities lie in her domestic skills, her understanding of the people around her, and her ability to offer comfort and practical advice during difficult times. Over the course of the series, she matures from a somewhat sheltered girl into a resilient woman who accepts the dangers of Sabu’s profession while maintaining a warm and supportive home.