On Sept. 5, 1945, weeks after World War II had ended, an unexploded bomb went off on the coast of the Otani district in Tokoname, Aichi Prefecture, killing seven children.

This tragic incident, occurring in a small village in the chaotic days just after the war ended, was left out of many records and remained largely untold.

Now almost seven decades have passed since the end of the war, and aging witnesses and relatives of the victims are afraid there will be no one left to remember when they pass away.