For quite some time now, the refugees who had fled the Japanese Empire, and more importantly Empress Itami Riyo's wrath, had found their way into the German Empire, where they lived a quiet and free life.
Under the orders of the Kaiser they were to be treated with exceptional kindness, and because of that many of these refugees had come forward and volunteered the information they had about The Japanese Empire and its modernization efforts.
This so-called conservative element of the Japanese Empire was the old Samurai class, which refused to bend the knee to the new Imperial Dynasty. It was only after they entered the borders of the reich did these traditionalists fully comprehend the threat that the Germany posed to Japan, and why their newest empress had practically gone crazy in her attempts to compete with a foreign power on the other side of the world.