"Cocoon, Enveloping. The girls become transparent." Hoshimiya Girls' High School. The traditional uniforms worn by the girls are made from their hair. One day, the "most beautiful-haired girl" vanished from the academy along with her hair. Worried about this disappearance is "the prince of the academy," Hana. And secretly in love with Hana is Yoko. The threads of the girls' hearts intertwine... A dazzlingly bittersweet girls' love story woven in a decadent world.