As Lee Mun-Jang maintained, he is presumed to be a Imcheon's Confucian scholar closely related to Lee San-Hae. Apparently, he inherited an academic instruction from Lee Ji-Ham(Lee San-Hae's uncle) under the guidance of Seo Kyong-Deok. Chosun's historical record offers a negative evaluation about Lee Mun-Jang, that is, a traitor to support Japan's invasion into CheJu Island and to serve the interest of the enemy. Contrary to this, Japan's history shows that it was not true, but he was a Confucian scholar well versed in the art of divination living on learning. Any physical evidence which he was implicated in a plot cannot be found. In view of the state of things at the times, he is supposed to have been a scholar leading a campaign of enlightenment providing the bridge of communication for Chosun's Confucianism and Japan's Buddhism. The fact that Lee Mun-Jang is recorded in Tokugawa Jikki and Jitsuroku, The True Tokugawa Record about Tokugawa shogunate serves to prove Tokugawa shogunate's recognition that Imjinwaeran was a war of aggression against Busido(Samurai Laws).