From the next year the Japanese Invasion of Korea in 1592 happened, the governor of Tsushima, So Yoshitoshi, sent envoys and repeatedly asked for a peace treaty, repatriating Joseon s people. Joseon explained Japan’s unilateral aggression broke friendly relations and the peace treaty should be approved by Ming. The government officials of Ming staying in Joseon quietly wanted amity of Japan, but the sovereign and subjects of Joseon delayed peace under the pretext of Ming. When trade was not allowed even after forwarding ambassadors and Koreans, the governor of Tsushima felt pressed and sent captured spies of Ming with message to help friendship with Joseon. He threatened that if the treaty was not achieved, a war would happen again. In 1604, Joseon felt necessity to investigate Japan’s conditions and communicate an intention to authorize trade and decided to dispatch Yujeong, postponed for years. Joseon chose Yujeong as the most fitted person for settlement of discord with Japan. To resolve conflict, building confidence is needed and to make trust, recovering relations is required. For healing connection, factors like mutual understanding, amity and respect, communication, accomplishing dream, shared perception are necessary. The people who possessed these factors and arranged the conflict between Joseon and Japan were the monks of the two countries. Yujeong and Japan monks politically belonged to different group, Joseon and Japan, but religiously were comrades disciplining Buddhism. In Joseon, the social status of monks was humble due to policy that esteemed Confucianism and repressed Buddhism whereas in Japan, the emperor and feudal government believed Buddhism and respected monks so that monks undertook diplomatic documents. The background Yujeong could participate actively was that Japan had faith in Buddhism and monks and Japan’s power-holders, Giyomasa and Ieyasu, had connections with Buddhism. The confidence and homogeneity of Yujeong and Japan’s diplomatic monks could resolve discord between Joseon and Japan after Japan’s invasion of Korea in 1592.