Misaki (Satomi Ishihara) and Hazuki (Nao Matsushita) are sisters. When they were younger, Misaki did not study well, but she had a charming personality which endeared her to others. Older sister Hazuki was meticulous, but she wasn't very good socially. Hazuki was also jealous of her younger sister, believing her mother only loved Misaki. After graduating from high school, Misaki left home and the family has not heard from her since.