Twelve-year-old Yuriko lives a comfortable life in Hiroshima during World War II, focused on school, friends, and her loving father. Her world is turned upside down when she discovers a shocking family secret that changes everything she thought she knew. As American bombers appear more frequently in the skies, Yuriko's daily life becomes filled with fear and uncertainty, culminating in the catastrophic event of August 6, 1945. This powerful story follows her journey of survival and the enduring hope she must find in the aftermath.