Misuzu Midorigawa is the late mother of Lynn Russell, the protagonist of the anime Lady Lady!!. Of Japanese origin, she met George Russell, the Viscount of Marble, during a business trip he made to Japan. The two married, and their daughter Lynn was born. Misuzu’s personality is described as closely resembling that of George’s first wife, a similarity that played a part in his decision to marry her. She was a loving and protective mother, deeply devoted to Lynn’s well-being and future. Her central motivation was her wish for Lynn to grow into a true lady, a concept she associated with the virtues of mercy, courage, and nobility. This wish became the guiding aspiration of Lynn’s life after Misuzu’s death.

Misuzu’s role in the story is primarily conveyed through memory and legacy. She dies early in the narrative when the car carrying her and Lynn to the Marble Mansion crashes; in the accident, she shields Lynn from harm at the cost of her own life. Her death is initially kept from Lynn, but the truth eventually emerges. The keepsake she left behind, the Lady’s Key, is given to Lynn by George and serves as a tangible symbol of her mother’s promise and the ideal she hopes Lynn will embody. Her memory influences Lynn’s relationships, especially with her father and half-sister Sarah, as the household navigates loss and new challenges. Although Misuzu herself does not undergo any development within the story, her character functions as the emotional foundation for Lynn’s journey. Her notable ability is her selfless act of protection, which directly saves Lynn and sets in motion the series’ central theme of striving to become a true lady.