No, there will be no "white" peace with the Americans. Pearl Harbor ensured that will never happen. The Japanese have no way to win a defensive war, so long as the Americans keep producing weapons and forces as they did historically. If the Japanese achieve getting a nuclear weapon, the Americans will call their bluff., because while the Japanese may have one nuclear weapon, the Americans have plans to build as many as 20 by March 1946. If the Japanese use their weapon (because only Japanese lives matter, they don't give a shit about American lives) the Americans will retaliate by nuking the Japanese home islands into radioactive rubble, uninhabitable for the next 150,000 years, and Japanese society and culture become historical items for study by obscure scholars.
Even if they don't nuke Japan into oblivion, Operation Downfall is still the plan for American invasion of the Home Islands with overwhelming force, after firebombing every major Japanese city.
If you think the Americans will be stopped from achieving their strategic goals by absorbing mass casulaties, look at the American reaction to Iwo Jima and Okinowa.
My father was a Marine at Tarawa, Saipan, and Iwo Jima. My uncle flew B-29 missions over the Home Islands. They have said that anything the Japanese did that was moral and just after Pearl Harbor didn't matter. Public opinion of the War was that Japan was going to get stomped for Pearl Harbor and the Bataan Death March. Unconditional surrender by the Japanese, or the American forces grind them into dust. Those were the only two options.
The Germans were trying to get the Bomb, but Allied Air raids destroyed a number of research labs. Also, most of the German nuclear experts fled Nazi Germay and went to the US, hampering Nazi efforts. The Japanese only get the bomb from knowledge
Miriai brought back with her, and were only able to find a limited amount of fissionable material for one, maybe two bombs. The Americans had the whole Manhatten Project, and spent $2 Billion (in 1940 dollars) to build the bomb and the infrastructure for producing plutonium. The Soviets didn't have the bomb until 1949, thanks to espionage and spending more than the Americans did to build one.
So Japan wins because ONE ship from the future, with a limited amount of advanced weapons is enough to off set the industrial might and combined brain power of the United States? Personally, I think
intervention spurs quantum leaps in technology by the Americans, and encourages the Japanese to resist them to hold onto their territorial gains in China and the Pacific. Again, if the Japanese use their nuclear device on America, public opinion turns from war weariness to unreleting fury to wipe Japan from the face of the earth. Again, if the Japanese think they can negotiate peace from a position of strength, the Americans will call their bluff, and turn MacArthur loose with whatever forces he wants to subdue Japan. Let's be blunt, history has shown that this is not a war Japan has a prayer of winning. Not unless they can match American industry.