On a winter day, a 12 year old girl by the name of “Rin” experiences her first period. “A woman’s red sandglass is turned over twice in her life. The first is at her first menstruation and the next is when she becomes a mother.” These are the words that have been passed on from her great grandmother to her grandmother to her mother, and, to her. Rin lies down on a park bench to rest. Soon, she falls asleep and sees a dream of herself as a mother.