During the Yi Dynasty Korea, delegates dispatched to Japan returned and the Seijinha group (黄允吉, who was seishi (senior envoy), warned that war would occur in the near future) and the Tojinha group (金誠一, who was the vice envoy, denied saying that invasion by Japan would not be in the near future) made different reports and the Tojinha group, the fraction in power, ignored the warning about the potential of war.
李氏朝鮮王朝では日本へ派遣した使節が帰国し、その報告が西人派（正使の黄允吉は戦争が近いことを警告）と東人派（副使の金誠一は日本の侵略はあったとしても先の話と否定）で別れ、政権派閥の東人派が戦争の警告を無視した。