The relationship between Shenyin, Youming and Nihong in the novel "Noble Records" can be summarized as follows: Shenyin is the princess of Youming Kingdom and the prince of Nihong Kingdom, while Youming Kingdom and Nihong Kingdom are both countries in the Noble Records World. In the novel, there was a special relationship between Shen Yin and Japan. Shen Yin once studied magic in Japan and was taken care of and protected by Japan. On the other hand, the Netherworld Kingdom had an unusual connection with Shen Yin's world. The two countries often communicated and cooperated with each other. In addition, in the Noble World, the Nihon Kingdom and the Netherworld Kingdom were both countries with titles of nobility. Shen Yin and the Nihon Kingdom's princes also had titles of nobility.