One of the most famous origami designs is the Japanese crane. The crane is auspicious in Japanese culture. Legend says that anyone who folds one thousand paper cranes will have their heart's desire come true. The origami crane (折鶴 "orizuru" in Japanese) has become a symbol of peace because of this belief and because of a young Japanese girl named Sadako Sasaki. Sadako was exposed to the radiation of the atomic bombing of Hiroshima as an infant, and it took its inevitable toll on her health. She was then a "hibakusha" – an atom bomb survivor. By the time she was twelve in 1955, she was dying of leukemia. Her classmate told her about the legend, so she decided to fold one thousand origami cranes so that she could live. However, when she saw that the other children in her ward were dying, she realized that she would not survive and wished instead for world peace and an end to suffering.