First daughter of the Tsukishima family. At the start of Part Two, she is in her third year of college. After her mother's death, she has run the Tsukishima household, acting as a surrogate mother for her sisters. She treats Kō like a younger brother. Her cooking is generally good, though she sometimes makes something wrong. She likes Junpei Azuma, but has trouble expressing her feelings to him directly. Her name means "first leaf".