[caveat emptor]

Apparently the Japanese were hoping for some sort of conditional surrender, brokered by the Soviets. Their unconditional surrender came not because of the A bombs, but on August 15, a week after the Soviets invaded Manchuria and overwhelmed the Japanese forces there. Soviet–Japanese War (1945)

[Lonesome in Massachussets]

The military faction was still holding out for a negotiated settlement. Only the intervention of the Emperor ended the war. On the night of August 14 some young military officers attempted a coup to oust the Emperor and continue the war.

You are wrong.