Are you Japanese? Because this sounds like the equivalent of Holocaust denial. The reason the Japanese expected the Americans to act like bastards in Japan was because they had everywhere they went. There are reasons why the Chinese and Koreans hate the Japanese quite profoundly, in a way that Indians don't hate the British and Fillipinos don't hate the Americans!
As for the fear-of-the-West-thing: Britain had been an ally of Japan's - to the extent it almost got dragged into the Russo-Japanese war - and the US had been very favorably inclined towards Japan too. The US public provided massive relief for the Tokyo earthquake. These things only changed with the Rape Of Nanking. The problem wasn't even Japanese colonialism, but that the Japanese version of it was horrible past limits other colonizers could accept. The Japanese *did* fear the West, but this went past rational limits, and falls far short of explaining their actual actions - which were cruel, pathological, and counter-productive. In the end the only explanation was that as a nation they decided to be racist bastards because it was fun - for a while.
No i am not japanese but i have studied japan and its people, history, culture, international relations, religion, past politics, psychology and more.
I have got see into the mindset of the japanese that lead to events like nanking.
First i do not deny nor condone any of the horrible actions takens by japan in its history.
Next you seem not to understand that many western nations may play the role of the noble uplifting and reasonable colonist/conquerer in the public eye but still when a popular movement, uprising, or ideology that threatened their domination came along they crushed it with force, murder and rape more often than not. It was completely within the nature of americans, british and other europeans to perform attrocities but then bury the history of their actions only to have the story survive (bury my heart at wounded knee, Aparthied, slavery, indian wars, suppression of the aboriginies, french indochina, lynching, crusades, inquistition, naziis and more. As the japanese took a if you can't beat them join them attitude they westernized, and Japanese colonialism was based on western colonialism. How could they not take that representation of the west and run with it on top of their own cultural ideology flaws.
Also just because recent relations may seem more warm does not mean past peoples enjoyed their experience with their conquerers. That is why many an isot into the past event sees even indian an other peoples trying their best to prevent their peoples conqeust at all cost. The way you make it sound its like the way past southern slaveowners would say that slaves liked being slaves because they don't complain. The ones that did complain were brutally beaten or killed. Filippinos fought a war with the usa after spain when the usa refused to grant them independence. Cuba was conquered by Fidel Castro because the usa allowed and supported a dictatorship there.
On the note of Nations being allies and trading partners to Japan remember these are the same peoples who broke treaty after treaty, slaughtered natives the world over, forced unequal treaties on non whites, and were well known for shot gun diplomacy. (Fall of the kingdom of hawaii, treaties broken with native americans once a week, Opium wars, British Empress of India, Catholic pope angers king so king starts his own church, French indochina, scramble for africa, forced openning of japan, blacks being told they would only be temporary indentured servant, and many more examples of using force to get your way.
Who would be dumb enough to trust these people longer than an hour?
Now try to force that kind of fear into British with out aliens or time travel.