Not quite, though there were indeed Japanese militarists of the *Big Six* who hoped that the atom bombing of Japan's cities would inspire massive waves of suicide attacks that would increase US casualties to unacceptable levels. After FDR died, US casualties in the Pacific were running around 1000 per day. They were gambling that the number of US *superbombs* was limited, with one more *Fat Man* type plutonium device of the type that destroyed Nagasaki available for US use in August, and four or five more in September. By the end of the year, it was expected that circa 20 would have been made available for U.S. tactical, as well as strategic bombing purposes.
If you haven't read the book The Last Mission: The Secret History of World War II's Final Battle, you really ought to.
http://home.netcom.com/~jb29miss/index.html