Billy, I can understand why the Chinese are wary of the Japanese, given that they had a field day in Korea and China in the first half of the 20th century.
But surely you would not disagree with me on this: The Japanese have been a non-threat for over 50 years. They would have to alter their constitution (specifically
Article 9) in order to go into serious attack mode.
Sure, some in Japan might like war. So do some in the US. And China. I would imagine there are quite a few people in your country that would like nothing more than to crush Taiwan like a bug. For that matter, I imagine many Chinese wanted Hong Kong and Macau back before 1997.
In the end, if a country really wants something, they'll go for it. And you'll probably see it building up before it happens. I'd say you're safe for now.