In most Japanese mind, Japanese is perfect, but American is better.
When Japan wants to develop nuclear bomb, the most anxious one will be the US that has nuked Japan twice. Once that happens, Japan's peaceful environment will lose forever, and G2 will unite to punish Japs with the most strict...
Japanese is most paranoid country to want to suppress the rise of China and always fancy them as more superior to other Asian nations. It is impossible for Japanese to accept China as the leading power in Asia, even through Japan is just a big size little country not better too much than Korea...
Sorry for replying so late, I have many other works to do!
In fact of tradition Chinese's mind have seldom this concept of the nation/race, which absolutely is influenced by foreigners. We are used to distinguishing different people with the places where they are from, and no one cares about...