Japan lost 2.5 million people in the war.
China lost 10 million people.
The Yasukuni shrine is still contentious. Hirohito refused to visit in his last years due to rumours that it housed Japan’s war criminals. The present day prime Minister still visits.
The USA rebuilt Japan to enable it to recover as a source of American influence in Asia.
The Atom bomb was seen as the crucial symbol of political power. The USA was shortly to consider using it again- this time on China.