Think about the root of Seikanron in the early modern times.

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Yoshida Shoin's original behavioral principle was solved from relation with the thought of second-half Mito Gaku ( Aizawa Seishisai), and the difference with Yokoi Shounan.I conducted historical-records analysis which carried out solution collection. As a result, I have considered the progress in which Shoin formed a Seikanron. I reported this result at the symposium in a SungyunKwanUniversity (South Korea).The sense of crisis formed by the 19th century and Perry arrival reached to the logic of a Hukokukyouhei. I considered the influence of after that the logic of a Hukokukyouhei. I performed historical-records collection about the trend of the Tsushima han in connection with a Seikanron. However, the result is not releasable. I would like to solve this problem from now on.