Yumi Fukuzawa is an ordinary first year student at Lillian Girls' Academy. By chance Yumi meets second year student Sachiko Ogasawara, who is a candidate to become a Red Rose. Sachiko later offers her rosary to Yumi Fukuzawa which signifies she will become an older sister to Yumi. Meanwhile, Yumi, who already looks up to popular Sachiko, is perplexed why she is picked. A festival named "Cinderella" then approaches, which is run by the Yamayuri Council. Conflicts between the older and younger sisters soon begins ...
Three sisters grow up on a chicken farm in a small town in Gifu. The oldest sister, Yukie Sawada, is engaged to be married, the middle sister, Sachiko works at a beauty salon and the youngest, Mayu, is on the track team in high school. Their happy, carefree lives are changed forever when Yukie's ex-boyfriend Suzuki commits an atrocious crime. Half-crazed and bent on revenge against the Sawada family, Suzuki mistakes Mayu for Yukie and pours acid all over her face. Overwhelmed by physical and psychological trauma, Mayu sinks deeper into depression and isolation, unresponsive to her sisters encouragement. Meanwhile, chilling news of a serial murderer, who preys on the alumni of Mayu's high school, sends shockwaves through their small town...
Kairo Aoi, a young teacher with striking good looks, has just learned that his new student, Sora Amakami, is the alluring teen prostitute he once hired. Here the nightmare begins. As the walls of the prestigious academy become a percolating hotbed of sexual intrigue, prostitution and blackmail, other students, including Sora's nerdy roommate and the sinister campus bully, are pulled down the same torrid path of unquenchable desire toward the inevitable moment when obsession turns deadly.
Magazine editor Mamiya is intrigued by high school model Noeru's talent and attitude, but soon realizes his feelings go beyond professional curiosity.
Ms. T's friend, Ms. K, who committed suicide, was a young girl who always hinted at suicidal thoughts, and it is said that those around her did not pursue the cause of her suicide. She, however, still believed that T-san was possessed by a man who looked like a shinigami and died.