Ari Beser's grandfather served on the planes that dropped atomic bombs on Hiroshima and Nagasaki. Harada Kosuzu's grandfather survived both. Now they are fighting for a world without nuclear weapons.
The key to achieving peace is feeling the pain of others. It's an idea Hayashida Mitsuhiro picked up from hibakusha in his native Nagasaki, and one he tries to teach young visitors to his city.
A renowned German playwright finds inspiration in a piano that survived the Hiroshima atomic bombing and its owner, who died after the blast at the age of 19, to create a piece warning against war's impact on the young. For more on this story: https://www3.nhk.or.jp/nhkworld/en/news/backstories/3944/
A Hiroshima teen and an 83-year-old atomic bomb survivor try to depict visually what one mother endured immediately after the blast - her agony and sacrifice, as well as her love and devotion to her family - so that her tragic story is not repeated.