Minami Inomata

Relatives gather from afar in wintery Ashibetsu upon the death of patriarch Mitsuo. A mysterious woman named Nobuko suddenly shows up. Her appearance gradually exposes wartime secrets and Mitsuo's unknown past.

In 2011, a journalist arrives in Nagaoka, a Japanese village that underwent destruction during both World War II and the 2004 Chūetsu earthquakes, and is now notable for the fireworks it launches annually in memory of the victims of war. She is there for two reasons: firstly, to learn about the experiences of Nagaoka's inhabitants, and secondly, to watch a stage play written by an enigmatic student of her ex-boyfriend, which depicts the bombing of the city during WWII.