Over two years, a group of students at the school has been painstakingly producing a five-minute virtual reality experience that recreates the sights and sounds of Hiroshima immediately before, during and after the USA dropped an atomic bomb on the city 73 years ago.
In his speech at Hiroshima's Peace Memorial Park, Mayor Kazumi Matsui said certain nations were "rekindling tensions that had eased with the end of the Cold War", although he did not identify those nations.
Nuclear deterrence and nuclear umbrellas are "inherently unstable and extremely dangerous" approaches that seek to maintain worldwide order by only generating fear in rival countries, he said, urging world leaders to negotiate in good faith to eliminate nuclear arsenals instead in a year when President Donald Trump pledged to increase the USA nuclear arsenal. He urged world leaders to negotiate in good faith to eliminate atomic arsenals.
However, Japan has not become a signatory to the Treaty on the Prohibition of Nuclear Weapons which came into effect in July 2017.
The US military dropped a second atomic bomb three days later on the city of Nagasaki, killing about 74,000, and Japan surrendered to Allied Forces on August 15, bringing an end to the war.
A woman burns a stick of incense at the cenotaph dedicated to the victims of atomic bombing at Hiroshima Peace Memorial Park in Hiroshima. "We in civil society fervently hope that the easing of tensions on the Korean Peninsula will proceed through peaceable dialogue", Matsui said.
The 73rd anniversary comes after Pyongyang's promise of a complete denuclearization of the Korean Peninsula grabbed attention following the historic US-North Korean summit in June.
Prime Minister Shinzo Abe, who also was at the ceremony, reiterated Japan's pledge to maintain its pacifist and non-nuclear principles. Now, the Associated Press reports a team of Japanese students have developed a virtual reality experience that recreates the attack, in an effort to highlight the lingering horrors the nuclear explosion wreaked upon the city - and prevent it from happening ever again. The bombings, the first atomic attacks on humans, closed World War II and opened the nuclear age.
But he pledged to do more to bridge their gap.
Japan needs to lead the global community toward "dialogue and cooperation for a world without nuclear weapons", the mayor added.