According to the xenophobia study, even people under 29 in Japan are twice as likely as the entire US population to object to the presence of neighbors of a different race. Older people are four times as likely to object. And with a UN observer saying the racism is primarily directed towards other Asian people which is more than an "anecdote" despite your assertion since he was sent there to assess this specifically, I have to say that I'm not quite sure what you're saying. How do you design a study about the targets of racism that people answer? You're asking for data that has an extraordinarily low probably of existing and trumpeting the fact that of course you are right, because you insist on numbers, any numbers.
1 in 10 people being racist wouldn't really qualify as being "incredibly racist" in my view. Perhaps "incredibly racist" isn't a very useful term anyway.
Yes, it's important to look at data rather than anecdotes. We can both pick anecdotes to support different arguments. I could point out for example that the 4th largest company in Japan was founded by someone of Korean decent...
Yes, there is racism in Japan. Yes, racism is more socially acceptable than in the US. Yes, it seems likely that it is more often directed against Asian neighbours. You have not presented any data that suggests that it is "incredibly racist" in Japan.
I would be interest in further data that quantifies the racism in Japan. Rather than a series of anecdotes that seem to support an opinion you've already formed.
You have supplied no data to support this statement, beyond anecdotes.
The data I've seen doesn't support the notion that the Japanese are "incredibly racist" against anyone at all.