Remember that the XXth AF had to refrain from bombing to dust a few cities so there would be potential targets for the A-bombs. By July, 1945 most of Japan's cities had been literally burnt to nothing, with some raids producing deaths in larger numbers than either of the two A-bombs did. The US could, and did, bomb anywhere in Japan with essentially no significant resistance from Japanese fighters or AAA. With virtually no imports the Japanese economy was headed for a rapid shutdown, even those factories that still stood. It would not be long before petroleum products were at the point that all you had left was enough to fuel those Kamikazes on their one way flights. Rations were marginally above starvation in terms of calories, and vitamin/nutrient deficiencies were an inch away from being widespread. This was in July, 1945 and even the fanatics knew this was going to get worse, yet they still wanted to fight on.
If there had been an invasion, the plan was to kill all Allied POWs - and had this been made public, all it would have done is pissed off the Allies more it would not have stopped them. The "cherry blossoms at night", even had it had some partial success, and against a USA with good public health, decent sanitation the effect would not have been as great as against some Chinese slum, would have not stopped anything either.
As another poster has reviewed, the "minimal" Japanese position for a surrender/end to the war was totally unacceptable to the Allies. In the face of all this, including the unreality of the "peace party", to expect that a particularly large "boom" would have an effect on the Japanese political and military leadership is wishful thinking.
If there had been an invasion, the plan was to kill all Allied POWs - and had this been made public, all it would have done is pissed off the Allies more it would not have stopped them. The "cherry blossoms at night", even had it had some partial success, and against a USA with good public health, decent sanitation the effect would not have been as great as against some Chinese slum, would have not stopped anything either.
As another poster has reviewed, the "minimal" Japanese position for a surrender/end to the war was totally unacceptable to the Allies. In the face of all this, including the unreality of the "peace party", to expect that a particularly large "boom" would have an effect on the Japanese political and military leadership is wishful thinking.