I know Japanese who are born in Japan with mixed race parents and have very fair hair. Common Japan isn't a freaking isolated island anymore, it's not 1830. So

I know Japanese who are born in Japan with mixed race parents and have very fair hair. Common Japan isn't a freaking isolated island anymore, it's not 1830. Some Japanese are born with brown hair, it's rare but it happens, they'd be forced to die their hair black.