Japanese stocks have been hitting record highs on the back of renewed confidence in domestic politics and the ruling administration's economic agenda, but experts warn of a disconnect between the stock market and economic fundamentals. Japan's Nikkei 225 has notched several firsts in recent days, crossing 56,000, then 57,000 and nearing 58,000, all fueled by the so-called " Takaichi trade ," following Prime Minister Sanae Takaichi's landslide victory in the Lower House. Japan's stock market,