The Prince Kitashirakawa, uncle of the Meiji Emperor, died during the pacification of Taiwan in 1895 when Taiwan became the first colony of Japan. Afterward, he became a spiritual icon for Japanese colonial rulers in Taiwan. At first glance, it is not suspicious that the Prince's sacrifice for Japan's new colony earned him recognition as a national hero. However, biographies and related materials about the Prince Kitashirakawa, both in modern and colonial Taiwan, indicate that he had been involved in political struggles between the Satsuma and Choushu regimes and the late Tokugawa regime's imperial court, and had been supported by feudal domains in the northeast during the War of Boshin. This paper will examine the discourse on the Prince Kitashirakawa in colonial Taiwan to expose how colonial Taiwan, as the periphery of the Japanese empire, challenged the core of Japan through questioning the legitimacy of Japan's emperor.