Sanseito party supporters raise their fists during a campaign rally for the upper house election, at Shiba Park in Tokyo on July 19. By Daisuke Sato Japan's populist Sanseito party stunned the nation when it gained several seats in July's upper house election. But its "Japanese First" slogan has been widely criticized as xenophobic, and foreign residents of Japan are concerned about rising discrimination. In 2024, the number of Japan's foreign residents rose more than 10 percent to 3.76 million, a new record for the third year in a row and making up just over 3 percent of the population....