August 1945. In a converted theological seminary on the outskirts of Nagasaki, a young doctor works to help his patients, as unsettling news comes of a new weapon used by the Americans on the city of Hiroshima. When the second nuclear weapon is dropped on Nagasaki, the hospital staff must work to save lives in the midst of the concentric circles of death that their city has become.

In 1945, the second and third-year students of a Hiroshima girls' school are taken away to work in war factories. The remaining 220 girls of the first year try to make the best of their new-found status as the only teenagers in an almost deserted town, even amid the deprivations of wartime. On the 7th of August, an American bomber changes their lives forever. Broadcast on the 43rd anniversary of Hiroshima in memory of "the girls who lost their lives to the atom bomb."

Six girls including Tsukishima Yui were summoned into the end of Edo period by the power of mystic stones. They became celestial nymphs to protect cities from evils. Each girl obtained her own power. The power Yui obtained was "word". She would fight against evils by her "words" that gave people hope.