Nanami Ishikawa works as an editor at a publishing company. She travels Hiroshima to go after her father Asahi who left home. During her visit to Hiroshima, she learns about the tragic story of Asahi's older sister Minami Hirano. When Minami Hirano was 13 years old, she was exposed to radiation by an atomic bomb.
Takako Tokiwa
Nanami Ishikawa
Isao Hashizume
Akira Ishikawa
Yuna Taira
Fuko Ishikawa
Rina Kawaei
Minami Hirano
Midoriko Kimura
Fujimi Hirano
Asuka Kudo
Akira Uchikoshi
Fuka Koshiba
Kyoka Ota
Yōsuke Asari
Akira Ishikawa (Young)
